add recipe for swift only ha controller deployments
sort server list so order is the same each time

closes https://github.com/rcbops/chef-cookbooks/issues/331
closes [DE39]
[DE52] allow sorting of realserver list

also:
[TA36] add swift-only attribute to only add keystone and swift to
haproxy
Merge pull request #26 from mancdaz/swift

Merged automatically by jenkins after successful build test