Allow unit test duration to be submitted as a float or an int

Summary: Fixes T8736. It's OK for duration to be something that comes out of JSON as an int, like `1`.

Test Plan: Will make @hach-que verify.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley, hach-que

Maniphest Tasks: T8736

Differential Revision: https://secure.phabricator.com/D13531

src/applications/harbormaster/storage/build/HarbormasterBuildUnitMessage.php

@@ -30,7 +30,7 @@ final class HarbormasterBuildUnitMessage
       'namespace' => 'optional string',
       'name' => 'string',
       'result' => 'string',
-      'duration' => 'optional float',
+      'duration' => 'optional float|int',
       'path' => 'optional string',
       'coverage' => 'optional map<string, wild>',
     );
@@ -44,7 +44,7 @@ final class HarbormasterBuildUnitMessage
     $obj->setNamespace(idx($dict, 'namespace', ''));
     $obj->setName($dict['name']);
     $obj->setResult($dict['result']);
-    $obj->setDuration(idx($dict, 'duration'));
+    $obj->setDuration((float)idx($dict, 'duration'));
 
     $path = idx($dict, 'path');
     if (strlen($path)) {