Remove unused package dependencies

* /sbin/vconfig command is not used by either nova or neutron.
* Now the AMQP carrot is not used, not even optionally by
  the oslo.messaging.
* python-gfalgs just referenced as a similar configuration style,
  by neutron.

Change-Id: Idde5446e47e7da1dd204ea518ab816e2cce77c7d
Update openSUSE-13.1 dependencies

The package libxml2-python was replaced by python-libxml2 since 12.2.
Rather use mariadb instead of mysql-community-server since the package
receives far more attention.

Change-Id: I8514048d05731750684862aa1e94331d7f602b68
Merge "Update openSUSE-13.1 dependencies"
Merge "Remove unused package dependencies"
Merge branch 'master' of github.com:openstack-dev/devstack