[COMMON/elasticsearch] Avoid 'Warning: Merging destination map for chart'

restructure values for docker image name:tag

Issue-ID: OOM-2533
Signed-off-by: Alexander Dehn <alexander.dehn@highstreet-technologies.com>
Change-Id: I7c02fe543b4f96871c3ade80c7b51c68627cb269
diff --git a/kubernetes/common/elasticsearch/components/master/values.yaml b/kubernetes/common/elasticsearch/components/master/values.yaml
index 2862692..22c4987 100644
--- a/kubernetes/common/elasticsearch/components/master/values.yaml
+++ b/kubernetes/common/elasticsearch/components/master/values.yaml
@@ -43,24 +43,22 @@
 ## master acts as master only node, choose 'no' if no further data nodes are deployed)
 dedicatednode: "yes"
 ## dedicatednode: "no"
-image:
-  imageName: bitnami/elasticsearch
-  tag: 6.8.6-debian-9-r23
-  ## Specify a imagePullPolicy
-  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
-  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
-  ##
-  pullPolicy: IfNotPresent
-  ## Optionally specify an array of imagePullSecrets.
-  ## Secrets must be manually created in the namespace.
-  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
-  ##
-  # pullSecrets:
-  #   - myRegistryKeySecretName
-  ## Set to true if you would like to see extra information on logs
-  ## ref:  https://github.com/bitnami/minideb-extras/#turn-on-bash-debugging
-  ##
-  debug: false
+image: bitnami/elasticsearch:6.8.6-debian-9-r23
+## Specify a imagePullPolicy
+## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
+## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
+##
+pullPolicy: IfNotPresent
+## Optionally specify an array of imagePullSecrets.
+## Secrets must be manually created in the namespace.
+## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+##
+# pullSecrets:
+#   - myRegistryKeySecretName
+## Set to true if you would like to see extra information on logs
+## ref:  https://github.com/bitnami/minideb-extras/#turn-on-bash-debugging
+##
+debug: false
 
 ## String to partially override common.fullname template (will maintain the release name)
 ##