- Disable sudo for kitchen tests
 - No update grub on docker/lxc
 - Avoid changing hostname in docker based tests

Change-Id: Ic93ecc4680fb9a44388f494259de28ea9e8a0fc0

Allows configuring general section as well as configuring
    each dhcp enabled interface separetly.
    Does not allow alias or lease configuration.

- enable topics on test pillar
- add integration test for sudo enabled groups
- use loop devices only for storage suite
- example inspec test for sudo state