[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/common/mongo/values.yaml b/kubernetes/common/mongo/values.yaml
index b21b0bf..223234f 100644
--- a/kubernetes/common/mongo/values.yaml
+++ b/kubernetes/common/mongo/values.yaml
@@ -25,7 +25,7 @@
 # Application configuration defaults.
 #################################################################
 
-dockerHubRepository: registry.hub.docker.com
+dockerHubRepository: docker.io
 image: library/mongo:4.0.8
 pullPolicy: Always