Only the docker-controller needs the PeerID and NetworkID, but it is
constantly passed as part of the arguments through the ccintf.  This is
unnecessary, and the docker controller instance should retain the value
of these strings instead.  This CR does that.

Change-Id: I64ab1e1405dd646355e469dfda6ec880dc199f4a
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>