This PS adds generation of certificate for barbican, when
tls connection is enabled (manifest.certificate=true), using
values from endpoints.key_manager.host_fqdn_override.default.tls
This PS also fixes tls connection to rabbitmq.
Change-Id: I6397ce934e33975b1d91795aaade498f3a71468a
Signed-off-by: Anselme, Schubert (sa246v) <sa246v@att.com>