[GENERIC] move from registry.hub.docker.com to docker.io

`registry.hub.docker.com` needs authentication now, in contrary to
previous behavior.
As OOM deployments is unauthenticated when using docker hib repository,
all OOM deployments is broken.

`docker.io` seems to be still OK with unauthenticated requests so let's
move to this endpoint.

Issue-ID: OOM-2636
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: Iea81b882d347124af22b0a9c408081706b1c6c6d
diff --git a/kubernetes/dmaap/components/message-router/charts/message-router-zookeeper/values.yaml b/kubernetes/dmaap/components/message-router/charts/message-router-zookeeper/values.yaml
index 44259a0..dc19cd0 100644
--- a/kubernetes/dmaap/components/message-router/charts/message-router-zookeeper/values.yaml
+++ b/kubernetes/dmaap/components/message-router/charts/message-router-zookeeper/values.yaml
@@ -21,7 +21,7 @@
   readinessImage: onap/oom/readiness:3.0.1
   loggingRepository: docker.elastic.co
   loggingImage: beats/filebeat:5.5.0
-  ubuntuInitRepository: registry.hub.docker.com
+  ubuntuInitRepository: docker.io
   persistence: {}
   envsubstImage: dibi/envsubst