nfs.py: fix user creation
nfs.py calls "ipa user-add" without inputting the password twice
leading to a timeout. Input password twice then.
Signed-off-by: François Cami <fcami@redhat.com>
Reviewed-By: Alexander Bokovoy <abbra@users.noreply.github.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>