Set the correct device names for "fixed" and "public"

Since https://github.com/crowbar/barclamp-deployer/pull/147 was merged the
deployer barclamp automatically include the vlan id in the interface attribute.
This should fix linux-bridge support again, which was broke since the above
mentioned pull request.
Resolve issue with objectstore.s3server
Add support for Live migrations with Xen
Install python-ceilometer not python-ceilometerclient

ceilometer.compute.nova_notifier is packaged in
python-ceilometer, not in python-ceilometerclient.
There is no use for python-ceilometerclient.
Merge pull request #199 from dirkmueller/pebbles_xen_mig

Add support for Live migrations with Xen
Merge pull request #211 from rhafer/release/pebbles/master

Set the correct device names for "fixed" and "public"
Merge pull request #212 from mjura/release/pebbles/working

Resolve issue with objectstore.s3server
Merge pull request #215 from dirkmueller/ceilometer

Install python-ceilometer, not python-ceilometerclient