Merge the tip of origin/release/proposed/2019.2.0 into origin/release/2019.2.0
523609cb Fix URL for openldap image
8fca068e Remove unnecessary parameter from ceph-upgrade pipeline
ece396bc Bump prometheus relay image
9932abc2 add additional parameters in ceph-remove-osd pipeline for cleaning orphan partitions
778f11a2 Add public key of mpolenchuk
eea6c07d Pin cvp-sanity-checks:2019.2.11 docker image
2dded631 Pass secrets to containers as files instead of env variables
28ed47eb Bump Alerta image with Docker Secrets and API token fix.
5cc2060a Openstack API check improvements
24e9fed5 Add default policy for Panko
ee64e0e4 Bump Contrail packages to 2019.2.11
Change-Id: Iaf7c9e1196cd80ef9e2f567aa4c6529f62ca6afe