Add microvm kind

```
kubebuilder create api \
  --group infrastructure \
  --version v1alpha1 \
  --kind Microvm
```

My go installation was weird. It was using 1.19.x but trying to use
`tools` from `/usr/lib/go-1.18`. Fixed by changing `GOROOT`.

PROJECT

@@ -3,4 +3,14 @@ layout:
 - go.kubebuilder.io/v3
 projectName: microvm-operator
 repo: github.com/weaveworks-liquidmetal/microvm-operator
+resources:
+- api:
+    crdVersion: v1
+    namespaced: true
+  controller: true
+  domain: flintlock.x-k8s.io
+  group: infrastructure
+  kind: Microvm
+  path: github.com/weaveworks-liquidmetal/microvm-operator/api/v1alpha1
+  version: v1alpha1
 version: "3"

api/v1alpha1/groupversion_info.go

@@ -0,0 +1,36 @@
+/*
+Copyright 2022 Weaveworks.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package v1alpha1 contains API Schema definitions for the infrastructure v1alpha1 API group
+// +kubebuilder:object:generate=true
+// +groupName=infrastructure.flintlock.x-k8s.io
+package v1alpha1
+
+import (
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/scheme"
+)
+
+var (
+	// GroupVersion is group version used to register these objects
+	GroupVersion = schema.GroupVersion{Group: "infrastructure.flintlock.x-k8s.io", Version: "v1alpha1"}
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion}
+
+	// AddToScheme adds the types in this group-version to the given scheme.
+	AddToScheme = SchemeBuilder.AddToScheme
+)

api/v1alpha1/microvm_types.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2022 Weaveworks.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// EDIT THIS FILE!  THIS IS SCAFFOLDING FOR YOU TO OWN!
+// NOTE: json tags are required.  Any new fields you add must have json tags for the fields to be serialized.
+
+// MicrovmSpec defines the desired state of Microvm
+type MicrovmSpec struct {
+	// INSERT ADDITIONAL SPEC FIELDS - desired state of cluster
+	// Important: Run "make" to regenerate code after modifying this file
+
+	// Foo is an example field of Microvm. Edit microvm_types.go to remove/update
+	Foo string `json:"foo,omitempty"`
+}
+
+// MicrovmStatus defines the observed state of Microvm
+type MicrovmStatus struct {
+	// INSERT ADDITIONAL STATUS FIELD - define observed state of cluster
+	// Important: Run "make" to regenerate code after modifying this file
+}
+
+//+kubebuilder:object:root=true
+//+kubebuilder:subresource:status
+
+// Microvm is the Schema for the microvms API
+type Microvm struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   MicrovmSpec   `json:"spec,omitempty"`
+	Status MicrovmStatus `json:"status,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// MicrovmList contains a list of Microvm
+type MicrovmList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []Microvm `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&Microvm{}, &MicrovmList{})
+}

config/crd/kustomization.yaml

@@ -0,0 +1,21 @@
+# This kustomization.yaml is not intended to be run by itself,
+# since it depends on service name and namespace that are out of this kustomize package.
+# It should be run by config/default
+resources:
+- bases/infrastructure.flintlock.x-k8s.io_microvms.yaml
+#+kubebuilder:scaffold:crdkustomizeresource
+
+patchesStrategicMerge:
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix.
+# patches here are for enabling the conversion webhook for each CRD
+#- patches/webhook_in_microvms.yaml
+#+kubebuilder:scaffold:crdkustomizewebhookpatch
+
+# [CERTMANAGER] To enable cert-manager, uncomment all the sections with [CERTMANAGER] prefix.
+# patches here are for enabling the CA injection for each CRD
+#- patches/cainjection_in_microvms.yaml
+#+kubebuilder:scaffold:crdkustomizecainjectionpatch
+
+# the following config is for teaching kustomize how to do kustomization for CRDs.
+configurations:
+- kustomizeconfig.yaml

config/crd/kustomizeconfig.yaml

@@ -0,0 +1,19 @@
+# This file is for teaching kustomize how to substitute name and namespace reference in CRD
+nameReference:
+- kind: Service
+  version: v1
+  fieldSpecs:
+  - kind: CustomResourceDefinition
+    version: v1
+    group: apiextensions.k8s.io
+    path: spec/conversion/webhook/clientConfig/service/name
+
+namespace:
+- kind: CustomResourceDefinition
+  version: v1
+  group: apiextensions.k8s.io
+  path: spec/conversion/webhook/clientConfig/service/namespace
+  create: false
+
+varReference:
+- path: metadata/annotations

config/crd/patches/cainjection_in_microvms.yaml

@@ -0,0 +1,7 @@
+# The following patch adds a directive for certmanager to inject CA into the CRD
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME)
+  name: microvms.infrastructure.flintlock.x-k8s.io

config/crd/patches/webhook_in_microvms.yaml

@@ -0,0 +1,16 @@
+# The following patch enables a conversion webhook for the CRD
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: microvms.infrastructure.flintlock.x-k8s.io
+spec:
+  conversion:
+    strategy: Webhook
+    webhook:
+      clientConfig:
+        service:
+          namespace: system
+          name: webhook-service
+          path: /convert
+      conversionReviewVersions:
+      - v1

config/rbac/microvm_editor_role.yaml

@@ -0,0 +1,31 @@
+# permissions for end users to edit microvms.
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/name: clusterrole
+    app.kubernetes.io/instance: microvm-editor-role
+    app.kubernetes.io/component: rbac
+    app.kubernetes.io/created-by: microvm-operator
+    app.kubernetes.io/part-of: microvm-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: microvm-editor-role
+rules:
+- apiGroups:
+  - infrastructure.flintlock.x-k8s.io
+  resources:
+  - microvms
+  verbs:
+  - create
+  - delete
+  - get
+  - list
+  - patch
+  - update
+  - watch
+- apiGroups:
+  - infrastructure.flintlock.x-k8s.io
+  resources:
+  - microvms/status
+  verbs:
+  - get

config/rbac/microvm_viewer_role.yaml

@@ -0,0 +1,27 @@
+# permissions for end users to view microvms.
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/name: clusterrole
+    app.kubernetes.io/instance: microvm-viewer-role
+    app.kubernetes.io/component: rbac
+    app.kubernetes.io/created-by: microvm-operator
+    app.kubernetes.io/part-of: microvm-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: microvm-viewer-role
+rules:
+- apiGroups:
+  - infrastructure.flintlock.x-k8s.io
+  resources:
+  - microvms
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups:
+  - infrastructure.flintlock.x-k8s.io
+  resources:
+  - microvms/status
+  verbs:
+  - get

config/samples/infrastructure_v1alpha1_microvm.yaml

@@ -0,0 +1,12 @@
+apiVersion: infrastructure.flintlock.x-k8s.io/v1alpha1
+kind: Microvm
+metadata:
+  labels:
+    app.kubernetes.io/name: microvm
+    app.kubernetes.io/instance: microvm-sample
+    app.kubernetes.io/part-of: microvm-operator
+    app.kuberentes.io/managed-by: kustomize
+    app.kubernetes.io/created-by: microvm-operator
+  name: microvm-sample
+spec:
+  # TODO(user): Add fields here