Merge pull request #1 from vuntz/ha

Set database password from crowbar, not cookbook
cluster_vhostname moved to CrowbarPacemakerHelper
Make HA port attributes integer, not strings
Get correct endpoints when HA is enabled
Stop settings attributes we don't need anymore

We only need node[:glance][:api][:bind_host] and
node[:glance][:registry][:bind_host] for the nagios monitoring, so just
get the right values directly there.