In Ocata, nova has made the cell_v2 setup mandatory as part of the
upgrade process in I72fb724dc13e1a5f4e97c58915b538ba761c582d. This
change makes the cell_v2 setup part of the default install for Ocata as
this feature will be required for some parts of nova in Ocata.
Depends-On: I693239ff5026f58a65eb6278b1a8fcb97af4f561
Depends-On: I08efa36f5f62ae406ab20e8da77c01fbf3d9b11f
Change-Id: I7839e3c8bfdec96b0d372e7a9d3511289e8004b9
Related-Bug: #1649341