Run "nova-manage db sync" on SUSE when HA is enabled

So far, we were not running it because the init script on SUSE does run
it. But with HA enabled, the service starts at the same time on all
nodes, which may result in failures on some nodes because db sync can't
be run multiple times simultaneously. The end result is that the
pacemaker resource was possilby failing on some nodes, which then
required some manual cleanup.
Increase timeout for crowbar_pacemaker_sync_mark protecting the db sync

The initial nova db sync is quite slow (more than one minute here).
Update for prepare_role_for_ha_with_haproxy API change
Merge pull request #348 from vuntz/api-change

Update for prepare_role_for_ha_with_haproxy API change
Only run the db_sync the very first time (on SUSE, at least)
Do the db sync only on initial run, and on all platforms
Merge pull request #346 from vuntz/db_sync-for-ha

Run "nova-manage db sync" on SUSE when HA is enabled
Merge branch 'release/roxy/master' into roxy-sync
Always start open-iscsi daemon on the compute host

Otherwise nova-compute tries to start it manually
when trying to attach the first volume, and then stumbles
over it because detection hasn't happened yet.
Simply replaced havana with icehouse
Merge pull request #355 from tboerger/feature/havana-to-icehouse

Simply replaced havana with icehouse
Merge pull request #353 from vuntz/roxy-sync

Merge roxy branch into stoney
Merge pull request #354 from dirkmueller/release/stoney/master

Always start open-iscsi daemon on the compute host
Added documentation and modified readme
Moved i18n file
Added gitignore file
Cleaned crowbar configuration
Updated copyright header
Rewritten hashes to 1.9 syntax
Added magic utf8 token to ruby files