Add gerritbot for #openstack-anvil channel

Change-Id: Icf0244f0c69ca8e0d6c2cf9304a42c06e1d47e03
Add oslo.rootwrap to the integrated gate

oslo.rootwrap recently graduated but was not made part of the
devstack-gate. This change is part of a series of changes affecting
devstack-gate, config and devstack which will collectively fix this:

https://review.openstack.org/#/q/status:open+topic:rootwrap-gate,n,z

This change adds the integration tests to the oslo.rootwrap list of
tests.

Change-Id: I5d1ebfa78f3008112e953919f6ad05972602177f
Merge "Add gerritbot for #openstack-anvil channel"
Merge "Add oslo.rootwrap to the integrated gate"