updating chef automator plugin with new plugin registration fields, merged in some minor upstream changes
fixed outdated documentation regarding automator skeleton method inputs
docs for plugin registration
Merge remote-tracking branch 'origin/develop' into feature/doc-plugin-registration

Conflicts:
	docs/docs/source/guide/admin/plugins.rst
syncing the wait/sleep from rackspace plugin to avoid situation where it appears sshd is restarted
check for curl, default to wget when installing chef
corrections per PR feedback
Merge pull request #111 from continuuity/feature/add-provider-automator-type

Feature/add provider automator type
Merge pull request #116 from continuuity/feature/doc-plugin-registration

Feature/doc plugin registration
hack workaround to install scp if missing
Merge pull request #118 from continuuity/hotfix/fixes-for-latest-images

Hotfix/fixes for latest images
fix debug statement to use correct variable
Merge pull request #120 from continuuity/hotfix/fix-loom-uri

fix debug statement to use correct variable
Merge remote-tracking branch 'origin/develop' into feature/add-provider-automator-type