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-adapter-openonu/templates/openonu-py-statefulset.yaml b/voltha-adapter-openonu/templates/openonu-py-statefulset.yaml
index bba823b..adf3ca4 100644
--- a/voltha-adapter-openonu/templates/openonu-py-statefulset.yaml
+++ b/voltha-adapter-openonu/templates/openonu-py-statefulset.yaml
@@ -16,7 +16,7 @@
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
-  name: adapter-open-onu
+  name: "{{ template "fullname" . }}"
   namespace: {{ .Release.Namespace }}
   {{- if or (hasKey .Values "extra_deployment_labels") (hasKey .Values "openonu_deployment_labels") }}
   labels:
@@ -86,6 +86,10 @@
               --log_level={{ tpl .Values.adapter_open_onu.log_level . | upper }}
               --totalReplicas={{ .Values.replicas.adapter_open_onu }}
               --currentReplica=$REPLICA_ID"
+        {{- if .Values.securityContext.enabled }}
+        securityContext:
+          allowPrivilegeEscalation: false
+        {{- end }}
         readinessProbe:
           httpGet:
             path: /readz