Prepare and include demo of olmv1 commands in kubectl-operator plugin README

[azych]

Once we're done with extending kubectl-operator plugin with all the new olmv1 commands (and possibly deprecate olmv0 from there), we should prepare an asciicinema demo and include it in the kubectl-operator README, similar to how it's currently done for olmv0.

[joelanford]

We should also update the extension developer e2e to use kubectl operator rather than all of this:

operator-controller/test/extension-developer-e2e/extension_developer_test.go

Lines 40 to 199 in a6de9f9

	catalog := &ocv1.ClusterCatalog{
	ObjectMeta: metav1.ObjectMeta{
	GenerateName: "catalog",
	},
	Spec: ocv1.ClusterCatalogSpec{
	Source: ocv1.CatalogSource{
	Type: ocv1.SourceTypeImage,
	Image: &ocv1.ImageSource{
	Ref: os.Getenv("CATALOG_IMG"),
	},
	},
	},
	}
	require.NoError(t, c.Create(context.Background(), catalog))
	installNamespace := "default"
	sa := &corev1.ServiceAccount{
	ObjectMeta: metav1.ObjectMeta{
	Name: fmt.Sprintf("serviceaccount-%s", rand.String(8)),
	Namespace: installNamespace,
	},
	}
	require.NoError(t, c.Create(ctx, sa))
	clusterExtension := &ocv1.ClusterExtension{
	ObjectMeta: metav1.ObjectMeta{
	Name: "registryv1",
	},
	Spec: ocv1.ClusterExtensionSpec{
	Source: ocv1.SourceConfig{
	SourceType: "Catalog",
	Catalog: &ocv1.CatalogFilter{
	PackageName: os.Getenv("REG_PKG_NAME"),
	},
	},
	Namespace: installNamespace,
	ServiceAccount: ocv1.ServiceAccountReference{
	Name: sa.Name,
	},
	},
	}
	cr := &rbacv1.ClusterRole{
	ObjectMeta: metav1.ObjectMeta{
	Name: fmt.Sprintf("clusterrole-%s", rand.String(8)),
	},
	Rules: []rbacv1.PolicyRule{
	{
	APIGroups: []string{
	"olm.operatorframework.io",
	},
	Resources: []string{
	"clusterextensions/finalizers",
	},
	Verbs: []string{
	"update",
	},
	ResourceNames: []string{clusterExtension.Name},
	},
	{
	APIGroups: []string{
	"",
	},
	Resources: []string{
	"configmaps",
	"services",
	"serviceaccounts",
	},
	Verbs: []string{
	"create",
	"update",
	"delete",
	"patch",
	"get",
	"list",
	"watch",
	},
	},
	{
	APIGroups: []string{
	"apiextensions.k8s.io",
	},
	Resources: []string{
	"customresourcedefinitions",
	},
	Verbs: []string{
	"create",
	"update",
	"delete",
	"patch",
	"get",
	"list",
	"watch",
	},
	},
	{
	APIGroups: []string{
	"apps",
	},
	Resources: []string{
	"deployments",
	},
	Verbs: []string{
	"create",
	"update",
	"delete",
	"patch",
	"get",
	"list",
	"watch",
	},
	},
	{
	APIGroups: []string{
	"rbac.authorization.k8s.io",
	},
	Resources: []string{
	"clusterroles",
	"roles",
	"clusterrolebindings",
	"rolebindings",
	},
	Verbs: []string{
	"create",
	"update",
	"delete",
	"patch",
	"get",
	"list",
	"watch",
	"bind",
	"escalate",
	},
	},
	},
	}
	require.NoError(t, c.Create(ctx, cr))
	crb := &rbacv1.ClusterRoleBinding{
	ObjectMeta: metav1.ObjectMeta{
	Name: fmt.Sprintf("clusterrolebinding-%s", rand.String(8)),
	},
	Subjects: []rbacv1.Subject{
	{
	Kind: "ServiceAccount",
	Name: sa.Name,
	Namespace: sa.Namespace,
	},
	},
	RoleRef: rbacv1.RoleRef{
	APIGroup: "rbac.authorization.k8s.io",
	Kind: "ClusterRole",
	Name: cr.Name,
	},
	}
	require.NoError(t, c.Create(ctx, crb))
	t.Logf("When creating an ClusterExtension that references a package with a %q bundle type", clusterExtension.ObjectMeta.Name)
	require.NoError(t, c.Create(context.Background(), clusterExtension))

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