Use configured director cert in bosh-monitor, nats-sync #2123

Job	Run time
unit_specs-director (postgresql)	3m 30s
unit_specs-director (mysql)	5m 35s
unit_specs (common:parallel)	41s
unit_specs (release)	48s
unit_specs (nats_sync:parallel)	55s
unit_specs (monitor:parallel)	52s
	12m 21s

Provide feedback