Update version aliases for rpc version control

Now that Havana has been branched, add aliases for the rpc version
implemented by Havana.  These aliases can be used in the configuration
options for doing outbound rpc version control.

This is one of the items that should be done after every release, and
has been added to the new release checklist wiki page:

    https://wiki.openstack.org/wiki/Nova/ReleaseChecklist

DocImpact - 'havana' is now a valid value to provide to all of the
options in the [upgrade_levels] section of nova.conf.

Change-Id: Ifa0b3dcc00843ad3f045a450ceb0f47f0b843f98
VMware: Fix ValueError unsupported format character in log message

Fixes a typo with format string in a log message.

Closes-bug: #1240292
Change-Id: Ia86859089351255cb974ed77b0c5f55a5e953b0e
Merge "VMware: Fix ValueError unsupported format character in log message"
Make cells 'flavorid' for resizes

Cells should use 'flavorid' (not 'id') for resizes.

bug 1241222

Change-Id: I57b997425f183f25d3ca032c7d8c35c1f49e3afc
Updated from global requirements

Change-Id: I98c312279426c2f95cefea67260afd1677a11184
Merge "Make cells 'flavorid' for resizes"
Merge "Updated from global requirements"
Merge "Update version aliases for rpc version control"