FK lookup failures during migration

There are a couple of cases where migrations have failed
upgrading from Grizzly to Havana, this seems to be isolated
to a couple of migrations so far and the error message is a
failure to lookup/associate the volume-id FK dependency.

It appears that this is caused by not setting the charset
in the migration, so the result is that the initial db setup
uses utf8 and the migrations are using the default latin1.

This patch goes through all of the migrations in Havana that
specify InnoDB and explicitly sets the charset to utf8 to match
the volumes table (and the other original tables).

Change-Id: I43b219ff5e4eea10a7391ad65ef68a80b7460370
Closes-Bug: #1233861