feat(helm/operator): statefulset labels and annotations (#7688)

This updates the eck-operator Helm chart to support annotations and labels on the Statefulset for the operator. This is useful for telemetry and tracking.

Adds two new keys to values:
- statefulsetAnnotations -- defines the annotations that should be added to the operator StatefulSet
- statefulsetLabels -- defines additional labels that should be added to the operator StatefulSet

Updates deploy/eck-operator/templates/statefulset.yaml to support these new values

Adds a unit test.

---------

Signed-off-by: nromriell <nateromriell@gmail.com>
Co-authored-by: Thibault Richard <thb.krkr@gmail.com>

deploy/eck-operator/templates/statefulset.yaml

@@ -5,8 +5,15 @@ kind: StatefulSet
 metadata:
   name: {{ include "eck-operator.fullname" . }}
   namespace: {{ .Release.Namespace }}
+  {{- with .Values.statefulsetAnnotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
   labels:
     {{- include "eck-operator.labels" . | nindent 4 }}
+    {{- with .Values.statefulsetLabels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
 spec:
   selector:
     matchLabels:

deploy/eck-operator/templates/tests/statefulset_test.yaml

@@ -20,3 +20,25 @@ tests:
         equal:
           path: spec.template.spec.automountServiceAccountToken
           value: false
+  - it: should render custom labels, and annotations values properly
+    set:
+      statefulsetAnnotations:
+        key1: value1
+      statefulsetLabels:
+        key2: value2
+    asserts:
+      - template: statefulset.yaml
+        equal:
+          path: metadata.annotations
+          value:
+            key1: value1
+      - template: statefulset.yaml
+        equal:
+          path: metadata.labels
+          value:
+            app.kubernetes.io/instance: RELEASE-NAME
+            app.kubernetes.io/managed-by: Helm
+            app.kubernetes.io/name: elastic-operator
+            app.kubernetes.io/version: 2.13.0-SNAPSHOT
+            helm.sh/chart: eck-operator-2.13.0-SNAPSHOT
+            key2: value2

deploy/eck-operator/values.yaml

@@ -40,6 +40,12 @@ resources:
     cpu: 100m
     memory: 150Mi
 
+# statefulsetAnnotations define the annotations that should be added to the operator StatefulSet.
+statefulsetAnnotations: {}
+
+# statefulsetLabels define additional labels that should be added to the operator StatefulSet.
+statefulsetLabels: {}
+
 # podAnnotations define the annotations that should be added to the operator pod.
 podAnnotations: {}