Fix yaml linting issues

My local tox tests are throwing several yamllint problems that are not
being picked up by the CI system. Likely due to a slightly older version
of yamllint in the CI.

Change-Id: Ie704b98228af626e0a22aa936ebbb445e3a8d5d1
Signed-off-by: Andrew Grimberg <agrimberg@linuxfoundation.org>
diff --git a/jjb/ric-app-admin/ric-app-admin.yaml b/jjb/ric-app-admin/ric-app-admin.yaml
index baec2dd..4f8ac32 100644
--- a/jjb/ric-app-admin/ric-app-admin.yaml
+++ b/jjb/ric-app-admin/ric-app-admin.yaml
@@ -15,7 +15,7 @@
     # pull from the public mirror + releases registry
     container-public-registry: nexus3.o-ran-sc.org:10001
     # push to the staging repo bcos all builds are RCs
-    container-push-registry:  nexus3.o-ran-sc.org:10004
+    container-push-registry: nexus3.o-ran-sc.org:10004
     # use host network to clone from our gerrit
     docker-build-args: '--network=host'
     # source of docker tag