Enabled recreation of test directory in apply_common_fixes function
Without it any test comprized of more than one cycle of installing-uninstalling
of ipa would fail due to the fact that test folder on the remote machine gets
deleted during ipa uninstallation.
Also removed duplicate call of apply_common fixes and added unapply_fixes to
uninstall_replica
Reviewed-By: Martin Basti <mbasti@redhat.com>