pass list of memcache servers to keystone::federation::openidc
pass list of memcache servers to keystone::federation::openidc

Change-Id: I58e364a3a6c0ebc7bc57ff5821ccdb882324ff81
Depends-on: I9ff976854b93cdf9ca3175d1fd39c2b268b9f7fa

openstack/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo