Fix typo in policy.json and checks in nicira plugin

Bug 1155379

This patch removes extra colons from policy.json.
Also, it fixes some checks in the nicira plugin which were not
passing correctly the target resource for the policy engine.

Change-Id: I89a1d170818173eaa90b50158289a06455febadc
Imported Translations from Transifex

Change-Id: I7e5b222e5b8609631f955dc552412ff0023dff46
Merge "Imported Translations from Transifex"