Updated openstack/openstack
Project: openstack/cinder  30e06b95b366dcd1259f6b4cfa066e15d75fb3f3

Don't use module excutils from oslo-incubator

Remove module excutils and sync its only consumer module fileutils,
which is using oslo.utils.

Change-Id: Ib2c60be9febf5e15b198529b11c978d2e5b6df1f