packaging: Updated the use of the taskcleaner utility

Taskcleaner utility was updated with new options. This
patch provides update to our code to use these new
options instead of previous ones.

Change-Id: I6c4185a6cdadb9ef152e3b3130c30d2c19cb07c0
Bug-Url: https://bugzilla.redhat.com/921201
Signed-off-by: Alex Lourie <alourie@redhat.com>