[mongodb] Parameterize cluster hostnames

Replace mdb{01,02,03} with reclass params
openstack_telemetry_node{01,02,03}_hostname.

Change-Id: I6ebdee83692da8d75dc567cfae2b43f65385fa32
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
2 files changed