fix boolean tests failure.

Re-enable test.py. It now works:

  Running test: test.py
  .....................
  ----------------------------------------------------------------------
  Ran 21 tests in 0.002s
 
  OK
 
This may be fixed a different way, but for now this is a workaround
for the test.
jelte said in jabber: "i know of no code that uses boolean values
in messages right now ... certainly no data specifications"


git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1765 e5f2f494-b856-4b98-b285-d166d9295462