Merge pull request #17 from rackerlabs/support-vendor-passthru

support vendor passthru
Merge pull request #18 from rackerlabs/support-vendor-passthru

Actually import passthru
Switching to more specific exceptions
Stylistic fixes
Merge pull request #19 from rackerlabs/JoshNang/specific-exceptions

Switching to more specific exceptions
Merge pull request #20 from rackerlabs/support-vendor-passthru

fix hardware type check
Merge branch 'master' into support-vendor-passthru

Conflicts:
	ironic_teeth_driver/passthru.py