Merge the tip of origin/release/proposed/2019.2.0 into origin/release/2019.2.0
be16a4bf Change docker_image_cvp_sanity_checks to 2019.2.18
ba25baca Set trigger for run backupninja_backup job
ba9966bf Add UPDATE_TO_MYSQL57 flag to "Deploy - upgrade Galera cluster" job
339a634d Add mysql version selector to galera pillars
7842e78d Update docker images with CVE fixes
0801cbea Add milliseconds to wsgi logs of panko, aodh, barbican.
50b30f75 Return logs of panko, aodh, barbican to older format
0433333e Fix issue with milliseconds in logs shiped to elastic.
Change-Id: I511e1168d2e2b054239ea7f0ad96b227c5392a50