Added try/except block for user_input in ipautil
Added error handling for function user_input in order to
handle EOFError in ipautil.py
https://fedorahosted.org/freeipa/ticket/3406
Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>