Move etcd jobs to start right after nats job

- The metron agent colocated with the CCs, DEAs, and routers needs to connect
	to etcd to get its configuration, so make sure etcd is up before those jobs start
- The etcd_metrics_server itself needs to connect to NATS, so make sure NATS
	is started first.

[#76328332]
Removed unused spec properties

ccng_api only runs "local" workers & ccng_worker only runs "generic" workers
remove unusued specs

Signed-off-by: Graeme Davison <gdavison@pivotallabs.com>