Remove operator Helm chart (#296)

We implement one step installation of the operator in #228.

In addition, 'kubectl rabbitmq install-cluster-operator' can be used to
install the operator.

We don't want to support another installation method via helm because it
requires maintenance and suffers from CRD upgrade issues.

The rabbitmq chart is still kept, in particular for KSM integration.

Makefile

@@ -97,12 +97,6 @@ generate-installation-manifests:
 	kustomize build config/rbac/ > installation/rbac.yaml
 	kustomize build config/installation > installation/operator.yaml
 
-generate-helm-manifests:
-	kustomize build config/namespace/base/ > charts/operator/templates/namespace.yaml
-	kustomize build config/crd/ > charts/operator/templates/crd.yaml
-	kustomize build config/rbac/ > charts/operator/templates/rbac.yaml
-	kustomize build config/default/overlays/helm/ > charts/operator/templates/deployment.yaml
-
 # Build the docker image
 docker-build: check-env-docker-repo git-commit-sha
 	docker build --build-arg=GIT_COMMIT=$(GIT_COMMIT) -t $(DOCKER_REGISTRY_SERVER)/$(OPERATOR_IMAGE):latest .

charts/README.md

@@ -1,10 +1,5 @@
 # RabbitMQ Cluster Operator Helm charts
 
-This folder contains Helm charts to deploy our components:
+This folder contains the `rabbitmq` Helm chart to deploy a `RabbitmqCluster` resource.
 
-* `operator` chart deploys RabbitMQ Cluster Operator and the Custom Resource Definition (CRD)
-* `rabbitmq` chart deploys a `RabbitmqCluster` resource
-
-`rabbitmq` chart can also be used in combination with [Container Services Manager (KSM)](https://docs.pivotal.io/ksm/) for OSBAPI integration.
-
-Please refer to the [rabbitmq.com/install-cluster-operator.html](https://www.rabbitmq.com/install-cluster-operator.html) to install RabbitMQ Cluster Operator using these charts.
+The `rabbitmq` Helm chart can also be used in combination with [Container Services Manager for VMware Tanzu (KSM)](https://docs.pivotal.io/ksm/) for [Open Service Broker API](https://www.openservicebrokerapi.org/) integration.