Bump CRDs version to v1beta1 (#1782)

This commit introduces the support for the two versions v1alpha1 (0.9) and v1beta1 (the next released version: 1.0.0-beta1). 
The CRDs are generated using `trivialVersions` to be compatible with older k8s versions (<1.13).
A go script is called after the CRDs generation to remove the podTemplate schema which is problematic.

List of changes:
- Copy pkg/apis/*/v1alpha1 in pkg/apis/*/v1beta1. Only differences exist for the ElasticsearchStatus (some fields have been removed since the 0.9)
- Replace v1alpha1 by v1betav1 in pkg/, config/, test/ and docs/*.asciidoc
- Add JSON struct tag fields to make the controller-gen happy
- Add kubebuilder annotations
- Restore the controller-gen target to generate the CRDs (with trivialVersions=true for now, #1823)
- Add a patch-crd go script to remove the podTemplate schema (#1822)
- Add the apm shortname for the APM Server

Makefile

@@ -41,6 +41,9 @@ else
 CONTROLLER_GEN=$(shell which controller-gen)
 endif
 
+# Produce CRDs that work back to Kubernetes <1.13 (no version conversion)
+CRD_OPTIONS ?= "crd:trivialVersions=true"
+
 ## -- Docker image
 
 # on GKE, use GCR and GCLOUD_PROJECT
@@ -98,6 +101,9 @@ generate: controller-gen
 	# we use this in pkg/controller/common/license
 	go generate -tags='$(GO_TAGS)' ./pkg/... ./cmd/...
 	$(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths=./pkg/apis/...
+	# Generate manifests e.g. CRD, RBAC etc.
+	$(CONTROLLER_GEN) $(CRD_OPTIONS) paths="./pkg/apis/..." output:crd:artifacts:config=config/crds
+	cd hack/patch-crd && go run main.go
 	$(MAKE) --no-print-directory generate-all-in-one
 	# TODO (sabo): reenable when new tag is cut and can work with the new repo path
 	# $(MAKE) --no-print-directory generate-api-docs

config/crds/elasticsearch.k8s.elastic.co_elasticsearches.yaml

@@ -0,0 +1,53 @@
+
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  creationTimestamp: null
+  name: elasticsearches.elasticsearch.k8s.elastic.co
+spec:
+  additionalPrinterColumns:
+  - JSONPath: .status.health
+    name: health
+    type: string
+  - JSONPath: .status.availableNodes
+    description: Available nodes
+    name: nodes
+    type: integer
+  - JSONPath: .spec.version
+    description: Elasticsearch version
+    name: version
+    type: string
+  - JSONPath: .status.phase
+    name: phase
+    type: string
+  - JSONPath: .metadata.creationTimestamp
+    name: age
+    type: date
+  group: elasticsearch.k8s.elastic.co
+  names:
+    categories:
+    - elastic
+    kind: Elasticsearch
+    listKind: ElasticsearchList
+    plural: elasticsearches
+    shortNames:
+    - es
+    singular: elasticsearch
+  scope: Namespaced
+  subresources:
+    status: {}
+  version: v1alpha1
+  versions:
+  - name: v1alpha1
+    served: true
+    storage: false
+  - name: v1beta1
+    served: true
+    storage: true
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []