Kubernetes-Entrypoint: Define entrypoint explicitly

This PS defines the container entrypoint to kubernetes entrypoint,
allowing images that do not have it defined as the entrypoint to be
used.

Change-Id: I8f2d57bb933ee7990f75d82e9cc1b47afd99f1c6

helm-toolkit/templates/snippets/_kubernetes_entrypoint_init_container.tpl

@@ -44,5 +44,7 @@ limitations under the License.
       value: "{{  include "helm-toolkit.utils.joinListWithComma" $deps.container }}"
     - name: COMMAND
       value: "echo done"
+  command:
+    - kubernetes-entrypoint
   volumeMounts: {{ $mounts | default "[]"}}
 {{- end -}}