Merge pull request #474 from rightscale/ivory_14_17_acu179610_ohai_rackspace_plugin_windows_support

acu179610 - add support for windows
Merge pull request #477 from rightscale/ivory_14_17_acu172052_6.1.1_release_notes

acu172052 Update release notes 6.1.1
acu172052 Bump version
Merge branch 'v6.1'

* v6.1:
  acu172052 Bump version