make the trove pylint job voting
make the trove pylint job voting

Makes the trove pylint job voting in the gate. This depends on a fix
merging in Newton (https://review.openstack.org/#/c/373221/)

Change-Id: I945d1b34b03a424d89b51d4662071ae0c80af5de
Depends-On: I910c738d3845b7749e57910f76523150ec5a5bff

Tesora/tesora-project-config,openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config