tool: Fix another Python 2.6 compatibility issue

Commit 096cc03d2f replaced the configurators tuple with a dict, using
dict comprehension syntax, which is not available on Python 2.6. Now we
use the good old dict() syntax instead.

We also silence a pep8-1.4.5 complaint.

Change-Id: Iee6e473d268317f7cdc42022a7a645e5eaee3a26
Signed-off-by: Nir Soffer <nsoffer@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/31738
Tested-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-by: mooli tayer <mtayer@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>