Add support to enable ssl keystone config

Currently there is no easy way to pass in enable ssl
and set the ssl options in keystone config. This
should expose the options to be set as part of
the ssl config in keystone.

Change-Id: Idb63406a90d8b1072e6781f820e62633aeb3bac7
Merge git://github.com/puppetlabs/puppetlabs-keystone