rework to work with latest helm charts
diff --git a/minimal-values.yaml b/minimal-values.yaml
index 7708ade..985f4e9 100644
--- a/minimal-values.yaml
+++ b/minimal-values.yaml
@@ -12,21 +12,71 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-defaults:
-  image_tag: master
-  image_pullPolicy: Always
+# IMAGE SELECTION
+# ---------------
+# By default no defaults are set and the image tags specified in the helm
+# charts will be used. If you would like to use the images generated from the
+# HEAD of the "master" git branches, then uncomment this below block and
+# set "<VALUE>" to "master". Similarly, if you want to use the images 
+# generated from the HEAD of the "voltha-2.1" git branches, then uncomment
+# this block and replace "<VALUE>" with "voltha-2.1".
+#defaults:
+#  image_tag: <VALUE>
 
 images:
-  adapter_open_olt:
-    tag_go: master
-    pullPolicy: Always
   onos:
-    tag: master
     repository: voltha/voltha-onos
-    pullPolicy: Always
-  bbsim:
-    tag: master
-    pullPolicy: Always
+    # IMAGE_SELECTION
+    # ---------------
+    # The helm chart used to deploy ONOS is the public ONOS helm chart so,
+    # there is a need to specify the exact image repository and image tag.
+    # If you would like to use the "master", "voltha-2.1", or other image 
+    # just replace the "tag" value below.
+    tag: 2.1.0
+
+# IMAGE_SELECTION
+# ---------------
+# Below are a list of all the images utilized by kind-voltha. This list is
+# provided as a conveinence if you would like to override on a per image
+# basis. If you are using the defaults, master, or voltha-2.1 branch there
+# is no need to utilize this list.
+#images:
+#  onos:
+#    repositry: voltha/voltha-onos
+#    tag: 2.1.0
+#  adapter_open_olt:
+#    repositry: voltha/voltha-openolt-adapter
+#    tag: 2.1.1
+#  adapter_open_onu:
+#    repositry: voltha/voltha-openonu-adapter
+#    tag: 2.1.0
+#  adapter_simulated_olt:
+#    repositry: voltha/voltha-adapter-simulated-olt
+#    tag: 2.1.1
+#  adapter_simulated_olt:
+#    repositry: voltha/voltha-adapter-simulated-onu
+#    tag: 2.1.1
+#  bbsim:
+#    repositry: voltha/voltha-bbsim
+#    tag: 2.1.0
+#  afrouter:
+#    repositry: voltha/voltha-afrouter
+#    tag: 2.1.1
+#  afrouterd:
+#    repositry: voltha/voltha-afrouterd
+#    tag: 2.1.1
+#  cli:
+#    repositry: voltha/voltha-cli
+#    tag: 2.1.1
+#  ofagent:
+#    repositry: voltha/voltha-ofagent
+#    tag: 2.1.1
+#  ro_core:
+#    repositry: voltha/voltha-ro-core
+#    tag: 2.1.1
+#  rw_core:
+#    repositry: voltha/voltha-rw-core
+#    tag: 2.1.1
 
 deployments:
   etcdOperator: true