remove openstack- prefix from user/group for SUSE

Make this more uniform accross distributions.
Merge pull request #184 from dirkmueller/no_prefix

remove openstack- prefix from user/group for SUSE
Update package list

(cherry picked from commit 21be842c0f4422de0f5aa043a70424b617f12873)
Add qemu-kvm rpm to resolve dependency

(cherry picked from commit 764a0a2d747f7c9c886848b4b538eb29364c80b6)
Fix to work when keystone is behind haproxy
Use new helpers to get hostnames for endpoints
Moved role constraints into model and removed edit deployment
Merge pull request #188 from tboerger/feature/constraint-move

Moved role constraints into model and removed edit deployment
Merge pull request #185 from vuntz/ubuntu-pkgs

Update package list
Moved role constraints into model and removed edit deployment

(cherry picked from commit 7062e7e572d1bf7bf33d3403ced1b03981281de8)
Merge pull request #190 from vuntz/release/roxy/master

Moved role constraints into model and removed edit deployment
Removed the single assignment block from constraints
Merge pull request #191 from tboerger/feature/roxy/fix-constraints

Removed the single assignment block from constraints
Removed the single assignment block from constraints

(cherry picked from commit abbfe22dd66fc20d4c292308d5bd0e612e6ec853)
Merge pull request #192 from vuntz/release/stoney/master

Removed the single assignment block from constraints
Add qemu-img as requirements for qemu-kvm
Merge pull request #187 from vuntz/haproxy

Work with keystone behind haproxy
Merge branch 'release/roxy/master' into roxy-sync
Services listen on another port when HA is enabled

When the HA proxy runs in front of the glance services (API and
registry), make sure that they bind to a different port.

In the config file templates of these services, the ports were set from
a config hash, so refactor this and pass the port as a template
variable from the recipes.

Also fix configs for scrubber and cache, as these use the registry
bind/port too.
Add HA recipe

If HA is enabled, this recipe sets up a load balancing for glance
services (registry + api).

The recipe basically just asks for the ip/ports of other servers that
should be behind HA and can be failed over to and sets up load balancing
on the current node.