Add windows azure inventory plugin
Add azure VM provisioning/termination module
Merge branch 'devel' of https://github.com/jwhitbeck/ansible into jwhitbeck-devel
Cleaning up azure module

* Fixed error messages to be more descriptive
* Removed direct use of subprocess module and replaced it with calls
  to module.run_command
* Changed AZURE_MANAGEMENT_CERT_PATH to be just AZURE_CERT_PATH, which
  matches what is expected by the inventory script
Merge branch 'jwhitbeck-devel' into devel
Merge branch 'devel' of https://github.com/ansible/ansible into devel