block_device_mappings support for CloudStack

block_device_mappings can be used with CloudStack the same way
as Amazon. It will remove any disks attached to a machine when
destroying it.
add tcp-dumper for visualzing salt-master network activity
fix missing brace
pylinting and cleanup
more linting
fix mail address
Update dockerio.py
Update dockerio.py
Update dockerio.py
support IPIP interface type for RedHat linux.
Add no_use_wheel option to pip.install
Update dockerio.py
Update dockerio.py
Update dockerio.py
Update dockerio.py
Update dockerio.py
Update dockerio.py
Fix linting error
Add no_use_wheel option to pip.installed
Fix error message command argument