Remove useless class definition

Remove useless class definition (swift::storage::account, swift::storage::container,
swift::storage::object) as they are already defined in swift::storage::server.

https://github.com/stackforge/puppet-swift/blob/master/manifests/storage/server.pp#L37
Refactor common lines
Remove ssh::server::install from puppet-openstack-cloud

Since ssh::server::install is already installed by the swift module
there is no need to have it declared here also.
Merge pull request #475 from enovance/clean_swift_manifests

Clean swift manifests