Add ignore_default_tenant parameter to keystone::role::admin class

Exposing the ignore_default_tenant parameter for the admin keystone_user resource.

Change-Id: If7ede3efd7718a5756adce7db60c0091d091ba83
Closes-Bug: #1319510
Merge "Add ignore_default_tenant parameter to keystone::role::admin class"
Merge git://github.com/puppetlabs/puppetlabs-keystone