python - ctl: Initialize the control attribute properly.

Log Message:
-----------
Initialize the control attribute properly.

Add to testInterface to validate that we've walked that path.

Modified Files:
--------------
ctl/src:
cluster.py (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/ctl/src/cluster.py.diff?r1=1.1&r2=1.2)
ctl/test:
cluster.py (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/ctl/test/cluster.py.diff?r1=1.1&r2=1.2)