Change some radosgw order some

attempts to fix issue with radosgw sometimes not starting correctly
Add support for older cciss devices

add detection for if devname is cciss and insert seperator if necessary
Add cciss device support for Ubuntu
PXE boot using HTTP instead of TFTP
Find devices by partition GUID and exclude mounted devices

Facter function now uses partition GUID instead of filesystem label
to find matching devices. It also excludes already mounted devices.
This depends on https://review.openstack.org/#/c/54841/.
See also https://bugs.launchpad.net/fuel/+bug/1246513
[PRD-2272] disable racy operations on crm services