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

c3f75c1 Added lvm support for removing partitions
23e38d6 Pass batch param to debian.osUpgradeNode function
5ab6364 Add missed step for keycloak deploy on cicd stage
f14fc57 Fix type in requirements file
71754dc Pin pip packages to stay with python2
a56c1ab Pin setuptools<45.0.0 for setupOpenstackVirtualenv
a69bd10 [CVP] Fixed cleaning up cvp containers

Change-Id: I89a0f0129ca1756c09dd4b3d2d8258954d8bf25c