Merge pull request #4 from wgd3/master

Re-add missing RHEV code
Bridge devices
Added bios module. Fixed some bad math operations and generally did a bit more clean up.
README for pysos
Changed some logic in how modules are called
Pulled Wallace's RHEV library and code updates. Changed output formatting for RHEV info.
Updated RHEV module
Almost done with cluster funtionality
Can't get the cluster methods to work
The hosts table now includes the data center it's in. Cluster class has
been added.
Merge pull request #6 from TurboTurtle/rhevdev

RHEV updates. Host DC name now reported
Fixed a bug where only 1 host's version would be detected, and adjusted
some Host table formatting
Quick update for framework
Started working on RHEV-M log parsing
Added engine.log error retrieval
Have functional 3-message loop for engine.log - this does not check for
similar error messsages yet
small commit. squashed bug that couldn't tell difference in 3.1 and 3.2
database for the vds_groups table
ACTUALLY fixed the cluster bug this time. Promise.
Got rid of some debug messages from previous bug squashing
Merge pull request #7 from TurboTurtle/rhevdev

Improved RHEV Reporting