Fixing volume entry definitions

* According to
   http://kubernetes.io/docs/user-guide/volumes/#types-of-volumes
   and
   a1b5325011
   there is hostPath volume type instead of hostDir;
   And there is no 'source' keyword anymore.

 * Replacing 'kubectl update' on 'kubectl replace':
   kubectl update is deprecated, need to use 'replace':
   9b3d42c090

Closes-Bug: #1604766

Change-Id: I1029caeb2827fc9de271b457c7a61b043d0189cb

Kubernetes/KubernetesPod/package/Classes/KubernetesPod.yaml

@@ -169,9 +169,9 @@ Methods:
       - $type: $volume.getType()
       - Value: $type
         Match:
-          HostDir:
+          HostPath:
             - $spec:
-                hostDir:
+                hostPath:
                   path: $volume.getParameters()
           TempVolume:
             - $spec:
@@ -179,9 +179,10 @@ Methods:
         Default:
           - Throw: UnknownDockerVolumeType
             Message: format('Unknown docker volume type {0}', $type)
-      - Return:
+      - $result:
           name: $._generateVolumeName($name, $volume)
-          source: $spec
+
+      - Return: $result.mergeWith($spec)
 
 
   _deleteContainer: