Merge the tip of origin/release/proposed/2019.2.0 into origin/release/2019.2.0

eb309575 Update aptly docker image to fix vulnerabilities
9f56e50d Update docker image to fix vulnerabilities
4e70c196 Pin cvp-sanity-checks:2019.2.24 PROD-37130
03ebb11d Bump remote_agent image to 2019.2.24
14169756 Update gerrit docker image

Change-Id: I591811072cdc16ba3d8bab8616d32cb61bf8aea0