Update CNAs to new path
Update CNAs to new path

The pypowervm API recently moved the Client Network Adapters to the
network file.  This change updates nova use to reflect the new location
within the API.

Change-Id: I2af9e5e184ff3d1227f8231223916a6bc89b37bc

stackforge/nova-powervm,stackforge/nova-powervm,openstack/nova-powervm,openstack/nova-powervm