Replacing -E flag to -I on all ipa python scripts except tests.

Signed-off-by: Alexandre Mulatinho <alex@mulatinho.net>
Related: https://pagure.io/freeipa/issue/7987


Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Francois Cami <fcami@redhat.com>