OCPEDGE-1311: add two node openshift deployment

Add new deployment type to the assisted service
called two node with arbiter(TNA)

internal/installcfg/builder/builder.go

@@ -112,6 +112,18 @@ func (i *installConfigBuilder) getBasicInstallConfig(cluster *common.Cluster) (*
 		SSHKey:     cluster.SSHPublicKey,
 	}
 
+	if cfg.ControlPlane.Replicas == 2 {
+		cfg.Arbiter = struct {
+			Hyperthreading string `json:"hyperthreading,omitempty"`
+			Name           string `json:"name"`
+			Replicas       int    `json:"replicas"`
+		}{
+			Hyperthreading: i.getHypethreadingConfiguration(cluster, "master"),
+			Name:           string(models.HostRoleArbiter),
+			Replicas:       1,
+		}
+	}
+
 	cfg.Networking.NetworkType = networkType
 
 	for _, network := range cluster.ClusterNetworks {

internal/installcfg/installcfg.go

@@ -233,6 +233,11 @@ type InstallerConfigBaremetal struct {
 		Name           string `json:"name"`
 		Replicas       int    `json:"replicas"`
 	} `json:"controlPlane"`
+	Arbiter struct {
+		Hyperthreading string `json:"hyperthreading,omitempty"`
+		Name           string `json:"name"`
+		Replicas       int    `json:"replicas"`
+	} `json:"arbiter"`
 	Platform              Platform            `json:"platform"`
 	BootstrapInPlace      *BootstrapInPlace   `json:"bootstrapInPlace,omitempty"`
 	FIPS                  bool                `json:"fips"`

swagger.yaml

@@ -6609,6 +6609,7 @@ definitions:
       - 'master'
       - 'worker'
       - 'bootstrap'
+      - 'arbiter'
 
   host-validation-id:
     type: string