VOL-3139 - add name helper template

- includes the {{ .Release.Name }} be default
- can be overriden with
  - nameOverride: override the {{ .Release.Name }}-{{ .Chart.Name }}
    porition
  - fullNameOverride: override everything

Change-Id: I0e1dbccba8f1e484e13e6f9ae43ea35ce97aac4f
diff --git a/voltha/values.yaml b/voltha/values.yaml
index 6964d80..8a8b5da 100644
--- a/voltha/values.yaml
+++ b/voltha/values.yaml
@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 ---
+nameOverride: ~
+fullNameOverride: ~
 
 # Default Values
 # The following are the default values used for every container in the