Updated register_host.py for the latest version of the directory service.
Updated register_host.py for the latest version of the directory service.

TEST=register_host.py registers host successfully
BUG=None

Review URL: http://codereview.chromium.org/3048036

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@54070 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser