Revert "Revert "Revert "Disable limestone due to mirror issues"""
Revert "Revert "Revert "Disable limestone due to mirror issues"""

This reverts commit 2b76dca4400381589b2cc26951fa9c4ae087df46.

Change-Id: Ic0d16cdc0b181888a0688dc32174b7a010871bfb

openstack-infra/project-config,openstack-infra/project-config