Update upstreams to Silicon GA

Update upstreams to Silicon GA

Bump upstreams to:
- odlparent-8.1.1
- mdsal-7.0.6
- controller-3.0.7
- netconf-1.13.1
- openflowplugin-0.12.0

Also fix a javadoc warning and update tests to correctly set
connector/node ID, so that the corresponding key can be formed.

Change-Id: Ic1da101145ca844e3f63c3b787bf845ab379ce50
Signed-off-by: David Arjona <darjona@yahoo.com>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>