Patch 1 (Yamin): This is where all work is merged from

Patch 1 (Yamin): This is where all work is merged from
Sashi, Joey and myself

Patch 2 (Sashi): Looks like some debugging printf work. Should
be removed. Sashi?

Patch 3 (Joey): Applying changes as per review by Chanchala in parent
changeset Change-Id: I2625063e4a6bdfa53e3954310a060ea3c0ee5d3c

Patch 4 (Joey & Yamin): Squash all of Active Discovery and rebase
on to master.

Patch 5 (Joey): Cleaned up warnings and refactored merge conflicts
that caused build server to fail.

Patch 6 (Yamin): More debugging and restructuring... more work needed specifically for the TTL logic

Patch 7 and 8 (Yamin): Fixed TTL logic and presence cancelation, more clean up to come...

Patch 9: Added the random TTL logic and cleaned up.

Change-Id: I4bbd72e066ed4b50f4d2be52367844918a29823a