Add mongo config settings in collector service templates
Add mongo config settings in collector service templates

In scenario where mongo and collector are on separate nodes like as
indicated in the bug, collector should be able to access mongo replset
and other hiera data.

Closes-bug: #1620468

Depends-On: I0bcd0d063a7a766483426fdd5ea81cbe1dfaa348

Change-Id: Iadf4c78fb03da183d19e93c30f78817a3cfed425

dprince/tripleo-heat-templates,dprince/tripleo-heat-templates,trozet/opnfv-tht,trozet/opnfv-tht,openstack/tripleo-heat-templates,trozet/opnfv-tht,openstack/tripleo-heat-templates