[FIX] Add whitelisting of fields of various types to configMap.

This Patch Set enables whitelisting of proper field names
of different types(i.e string, integer)in configMap volume.
It makes the pauseImage for daemonjob configurable.

Change-Id: Ia2062c5bc9ba1d8783e9573d7f9ea315c34f7fe7

daemonjob-controller/templates/bin/_sync-hook.py.tpl

@@ -32,6 +32,7 @@ def is_job_finished(job):
 
 
 def new_daemon(job):
+    pause_image = {{ .Values.images.tags.pause | quote }}
     daemon = copy.deepcopy(job)
     daemon['apiVersion'] = 'apps/v1'
     daemon['kind'] = 'DaemonSet'
@@ -45,7 +46,7 @@ def new_daemon(job):
         job['spec']['template']['spec']['containers'])
     daemon['spec']['template']['spec']['containers'] = [
         {'name': "pause", 'image': job['spec'].get(
-            'pauseImage', 'gcr.io/google_containers/pause'),
+            'pauseImage', pause_image),
          'resources': {'requests': {'cpu': '10m'}}}]
     daemon['spec']['selector'] = {'matchLabels': copy.deepcopy(
         job['spec']['template']['metadata']['labels'])}

daemonjob-controller/templates/crd.yaml

@@ -343,8 +343,11 @@ spec:
                                   type: string
                               configMap:
                                 type: object
-                                additionalProperties:
-                                  type: string
+                                properties:
+                                  name:
+                                    type: string
+                                  defaultMode:
+                                    type: integer
                         restartPolicy:
                           type: string
                         tty:

daemonjob-controller/values.yaml

@@ -19,6 +19,7 @@ release_group: null
 images:
   tags:
     python: docker.io/python:3.6-slim
+    pause: gcr.io/google_containers/pause:latest
     image_repo_sync: docker.io/docker:17.07.0
   pullPolicy: IfNotPresent
   local_registry: