Import missing gettextutils._ in shell.py
Import missing gettextutils._ in shell.py

Closes-Bug: #1355252

Change-Id: I3aef19235735b3b374b92985f142712cb0f37a35

JioCloud/python-glanceclient,mmasaki/python-glanceclient,mmasaki/python-glanceclient,openstack/python-glanceclient,varunarya10/python-glanceclient,alexpilotti/python-glanceclient,klmitch/python-glanceclient,alexpilotti/python-glanceclient,JioCloud/python-glanceclient,klmitch/python-glanceclient,openstack/python-glanceclient,varunarya10/python-glanceclient