This update for spec-cleaner fixes the following issues:

Update to 1.1.6 (boo#1099674):

* Do not remove groups by default. Now, groups are kept untouched
  by default. Introduce a new option '--remove-groups' that
  removes Group tags from the specfile. Remove '--preserve_groups'
  option.
* Say goodbye to setup.py test usage as it is deprecated
* Update the copyring and SUSE header string wrt #264
* Ignore hpc_configure macro from bracketing

This update was imported from the openSUSE:Leap:15.0:Update update project.