[freeipa PR#769][synchronized] test_caless: add pkinit option and test it

[Rezney]

   URL: https://github.com/freeipa/freeipa/pull/769
Author: Rezney
 Title: #769: test_caless: add pkinit option and test it
Action: synchronized

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/769/head:pr769
git checkout pr769