[helm create] Include serviceAccount.annotations value (#7246)

* Include serviceAccount.annotations value

Signed-off-by: Naseem <naseemkullah@gmail.com>

* Add comment about service account annotations

Signed-off-by: Naseem <naseemkullah@gmail.com>
(cherry picked from commit a963736f66)

pkg/chartutil/create.go

@@ -103,6 +103,8 @@ fullnameOverride: ""
 serviceAccount:
   # Specifies whether a service account should be created
   create: true
+  # Annotations to add to the service account
+  annotations: {}
   # The name of the service account to use.
   # If not set and create is true, a name is generated using the fullname template
   name:
@@ -302,6 +304,10 @@ metadata:
   name: {{ include "<CHARTNAME>.serviceAccountName" . }}
   labels:
 {{ include "<CHARTNAME>.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
 {{- end -}}
 `