Fix metadata_settings in containerized mongodb
Fix metadata_settings in containerized mongodb

The containerized version of the mongodb service omits the
metadata_settings definition [1], which confuses certmonger when
internal TLS is enabled and make the generation of certificates fail.

Use the right setting from the non-containerized profile.

[1] https://review.openstack.org/#/c/461780/

Change-Id: I50a9a3a822ba5ef5d2657a12c359b51b7a3a42f2
Closes-Bug: #1709553

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates