Improve shell cmds and logging in 'delete_vips'

Get rid of piping to 'grep' in 'ip_address_show'
method and fix issues with logging.

Change-Id: Icbfba0fce437001ba9c4c6c07a0811f49654dfd5
Closes-bug: #1390159
Remove NeutronGreHa tests class from 4th thread

Change-Id: Ib55a69cd30ff1ebb35b5b919af5dbe177e383287
Closes-bug: #1390174
Merge "Improve shell cmds and logging in 'delete_vips'"
Mount /etc/yum.repos.d from host to storage-repo

We have to mount /etc/yum.repos.d into fuel-storage-repo container if we
want to get latest repos inside containers. Otherwise we will have
latest repos, but they won't be used.

Change-Id: I7de729be3cb17cb13d1838b69fb964cb43248cff
Closes-Bug: #1390375
Fix for diff upgrade tarball

Implements: blueprint reduce-tarball-size
Change-Id: I0456a06d675e7e1a535669475a6216009be73430
Merge "Remove NeutronGreHa tests class from 4th thread"
Merge "Fix for diff upgrade tarball"
Merge "Mount /etc/yum.repos.d from host to storage-repo"