tool: sebool is-configured when selinux is disabled will always be MAYBE

Otherwise if selinux is disabled, we get an exception[1]

[1]:
>>> sebool_obj = seobject.booleanRecords()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.6/site-packages/seobject.py", line 2032, in __init__
    semanageRecords.__init__(self, store)
  File "/usr/lib64/python2.6/site-packages/seobject.py", line 240, in __init__
    self.sh = self.get_handle(store)
  File "/usr/lib64/python2.6/site-packages/seobject.py", line 267, in get_handle
    raise ValueError(_("SELinux policy is not managed or store cannot be accessed."))
ValueError: SELinux policy is not managed or store cannot be accessed.

Change-Id: I8d728fac39be454600235d80c8c24641d6c309a4
Signed-off-by: Mooli Tayer <mtayer@redhat.com>
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/34516
Reviewed-by: Dan Kenigsberg <danken@redhat.com>