The functionality of local docker registry authentication is implemented
in commit https://review.openstack.org/#/c/626355/.
However, local docker registry is currently used to pull/push images
during application apply without authentication. This commit passes
user credentials when pulling/pushing images from docker registry,
otherwise application apply will fail after the above docker registry
authentication commit merged.
Change-Id: Ifd43631e6fb685aed45fd2ad90d74ef3658bdb99
Story: 2002840
Task: 28945
Signed-off-by: Angie Wang <angie.wang@windriver.com>