Include the unit status in the getdiff conduit method

Summary:
We need to query the unit status in order to determine if
there are postponed unit tests to update after running "arc unit"

Test Plan:
1) set my conduit uri to a server running the new code
2) ensured unitStatus existed when retrieving a diff

Reviewers: epriestley

Reviewed By: epriestley

CC: dpepper, aran, epriestley

Differential Revision: 918

src/applications/conduit/method/differential/getdiff/ConduitAPI_differential_getdiff_Method.php

@@ -82,6 +82,8 @@ class ConduitAPI_differential_getdiff_Method extends ConduitAPIMethod {
       'revisionID' => $diff->getRevisionID(),
       'sourceControlBaseRevision' => $diff->getSourceControlBaseRevision(),
       'sourceControlPath' => $diff->getSourceControlPath(),
+      'unitStatus' => $diff->getUnitStatus(),
+      'lintStatus' => $diff->getLintStatus(),
       'changes' => array(),
       'properties' => array(),
     );