nfs fix for xenial images
nfs fix for xenial images

for Xenial there is no need to restart idmapd

Closes-Bug: #1590929

Change-Id: I50b1e72a787b0fcb80ac30bdba622afcad3c47be

Juniper/nova,vmturbo/nova,phenoxim/nova,Juniper/nova,gooddata/openstack-nova,gooddata/openstack-nova,klmitch/nova,vmturbo/nova,mikalstill/nova,jianghuaw/nova,mikalstill/nova,openstack/nova,gooddata/openstack-nova,vmturbo/nova,mikalstill/nova,openstack/nova,rahulunair/nova,rahulunair/nova,mahak/nova,vmturbo/nova,klmitch/nova,jianghuaw/nova,openstack/nova,mahak/nova,klmitch/nova,Juniper/nova,klmitch/nova,jianghuaw/nova,Juniper/nova,phenoxim/nova,rahulunair/nova,mahak/nova,gooddata/openstack-nova,jianghuaw/nova