sudo doesn't work on IPA clients/hosts if default host-group "ipaservers" is specified in sudo rule.

Issue

• sudo doesn't work on IPA clients if default host-group ipaservers is specified in sudo rule.
• sudo fails on IPA clients if sudo-rule is applied on default host-group ipaservers:

[root@ipaserver ~]# ipa sudorule-show testsudo
  Rule name: testsudo
  Enabled: TRUE
  Command category: all
  User Groups: testgroup
  Host Groups: ipaservers   <-----

[root@ipaclient ~]# id testuser
uid=100001(testuser) gid=100001(testuser) goups=100001(testuser),100011(testgroup)

[root@ipaclient ~]# sudo -ll -U testuser
User testuser is not allowed to run sudo on ipaclient.  <-----