Allow to scale up the operator pods by using the Helm Chart (#1881)

* Allow to scale up the operator pods by using the Helm Chart
* Add support for horizontal pod autoscaling (#1676)
* fix: spec.replicas

.helm/starter/README.md

@@ -235,6 +235,11 @@ AWX:
 |---|---|---|
 | `extraDeploy` | array of additional resources to be deployed (supports YAML or literal "\|") | - |
 
+### Operator
+| Value | Description | Default |
+|---|---|---|
+| `Operator.replicas` | Number of controller-manager instance replicas | `1` |
+
 ### customSecrets
 | Value | Description | Default |
 |---|---|---|

Makefile

@@ -370,14 +370,21 @@ helm-chart-generate: kustomize helm kubectl-slice yq charts
 	for file in charts/$(CHART_NAME)/raw-files/*rolebinding*; do\
 		$(YQ) -i '.subjects[0].namespace = "{{ .Release.Namespace }}"' $${file};\
 	done
+	# Add .spec.replicas for the controller-manager deployment
+	for file in charts/$(CHART_NAME)/raw-files/deployment-*-controller-manager.yaml; do\
+		$(YQ) -i '.spec.replicas = "{{ (.Values.Operator).replicas | default 1 }}"' $${file};\
+	done
 	# Correct .metadata.name for cluster scoped resources
 	cluster_scoped_files="charts/$(CHART_NAME)/raw-files/clusterrolebinding-awx-operator-proxy-rolebinding.yaml charts/$(CHART_NAME)/raw-files/clusterrole-awx-operator-metrics-reader.yaml charts/$(CHART_NAME)/raw-files/clusterrole-awx-operator-proxy-role.yaml";\
 	for file in $${cluster_scoped_files}; do\
 		$(YQ) -i '.metadata.name += "-{{ .Release.Name }}"' $${file};\
 	done
-
 	# Correct the reference for the clusterrolebinding
 	$(YQ) -i '.roleRef.name += "-{{ .Release.Name }}"' 'charts/$(CHART_NAME)/raw-files/clusterrolebinding-awx-operator-proxy-rolebinding.yaml'
+	# Correct .spec.replicas type for the controller-manager deployment
+	for file in charts/$(CHART_NAME)/raw-files/deployment-*-controller-manager.yaml; do\
+		$(SED_I) "s/'{{ (.Values.Operator).replicas | default 1 }}'/{{ (.Values.Operator).replicas | default 1 }}/g" $${file};\
+	done
 	# move all custom resource definitions to crds folder
 	mkdir charts/$(CHART_NAME)/crds
 	mv charts/$(CHART_NAME)/raw-files/customresourcedefinition*.yaml charts/$(CHART_NAME)/crds/.