Fix PRD-1299. Change cinder client usage to nova
client for verification of volume attachment

In case if wrong provider location is provided cinder client
says that attachment was successful. But phisically it is not happened.
To fix this change usage of cinder client to verification
of attachment to nova client.
Also delete not used modules from the package:
* common.networking_common
* etc.image_vdi
*common.extended_tempest_conf
Merge pull request #70 from Mirantis/PRD-1299-fix

Fix PRD-1299. Change cinder client usage to nova