Do not crash when a node has no alias
Merge pull request #75 from vuntz/fix-rgw-crash

Do not crash when a node has no alias
Allocate public IP address for radosgw nodes
Sort the apache ports we're listening to

Otherwise, we restart apache every now and then.
Merge pull request #76 from vuntz/radosgw-public

Allocate public IP address for radosgw nodes
Merge pull request #77 from vuntz/apache-sort

Sort the apache ports we're listening to
initial HA support (crowbar part, mostly copy from nova_dashboard)
initial chef support for HA