Fix pkg name for mysql-connector-python on SUSE

The correct package name on SUSE distros is python-mysql-connector-python.

Change-Id: I5250356f782f149f87f3d0ffba3380911fa437be
Stop setting nova.conf settings that mean nothing

* DEFAULT.fixed_range isn't a valid option in nova anymore
* DEFAULT.osci_compute_workers was never a thing, it should be
  DEFAULT.osapi_compute_workers

Change-Id: Ib08f3e20e4685b331385431276f890205fa76da6
Merge "Fix pkg name for mysql-connector-python on SUSE"
Merge "Stop setting nova.conf settings that mean nothing"