SPEC: Fix build in mock
    
    Neither pylint nor jsl is installed by default because rpm macro with_lint
    is not defined in spec file. However, configure script tried to
    find pylint/jsl anyway.
    
      checking for Pylint... /usr/bin/python2: No module named pylint
      configure: error: cannot find pylint for /usr/bin/python2
    
      RPM build errors:
      error: Bad exit status from /var/tmp/rpm-tmp.2GAFh4 (%build)
          Bad exit status from /var/tmp/rpm-tmp.2GAFh4 (%build)
    
    Resolves:
    https://fedorahosted.org/freeipa/ticket/6604
    
    Reviewed-By: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Tomas Krizek <tkrizek@redhat.com>