Factorize argparse importing
Factorize argparse importing

Change-Id: I6bf56ee1a27b661cf72c2953bb5d1a5c45d14810
Signed-off-by: Vincent Legoll <5d42a0e44e2b47374e182c98b792e43fa0a82956@idgrilles.fr>

dtroyer/cliff,dtroyer/cliff,openstack/cliff,openstack/cliff