This introduces a few new parameters to the profile class so that users
can enable keystone integration of RADOS Gateway.
This allows us to fix some ignored profile parameters, and also remove
the references from the non-profile manifest to the profile parameters.
The rgw_keystone_version parameter is removed by this change.
The actual parameter was deprecated[1] and was removed[2] from the rgw
class very long ago.
[1] 85b9d61c40
[2] 0377da4e08
Change-Id: I4026d3c2d40ae9b7ed9c3a60529011854b878f89
e970858120