pdp-d feature to simulate aai/mso/vfc in lab

pdp-d feature to simulate aai/mso/vfc in lab

implemented as an optional loadable feature, this
capability enables to bring up simulators used by
junits in a pdp-d lab configuration.

After lab installation, perform:

1. features enable controlloop-util
2. policy start

Now the simulators are opened at ports 6666, 6667, and 6668.

netstat output:
tcp6       0      0 127.0.0.1:6666          :::*                    LISTEN      21562/java
tcp6       0      0 127.0.0.1:6667          :::*                    LISTEN      21562/java
tcp6       0      0 127.0.0.1:6668          :::*                    LISTEN      21562/java

21562 is the pdp-d PID in the lab.

curl http://localhost:6666/aai/v11/network/generic-vnfs/generic-vnf/vnfIdA
{ "vnf-id": "5e49ca06-2972-4532-9ed4-6d071588d792", ... }

Change-Id: I3f05333ce5549b2274eb967b2b8866189b7f8843
Issue-ID: POLICY-259
Signed-off-by: Jorge Hernandez <jh1730@att.com>