When repository services are available, use them when creating a new repository

Summary:
Ref T2783. When creating a new repository, test for cluster services. If cluster services are available, allocate on a random open service.

Show the service that repositories are allocated on.

Test Plan: Created a new repository, saw it allocate onto an available cluster service.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T2783

Differential Revision: https://secure.phabricator.com/D11003

src/applications/diffusion/controller/DiffusionRepositoryEditMainController.php

@@ -575,6 +575,21 @@ final class DiffusionRepositoryEditMainController
       ->setUser($viewer)
       ->setActionList($actions);
 
+    $service_phid = $repository->getAlmanacServicePHID();
+    if ($service_phid) {
+      $handles = $this->loadViewerHandles(array($service_phid));
+      $v_service = $handles[$service_phid]->renderLink();
+    } else {
+      $v_service = phutil_tag(
+        'em',
+        array(),
+        pht('Local'));
+    }
+
+    $view->addProperty(
+      pht('Storage Service'),
+      $v_service);
+
     $view->addProperty(
       pht('Storage Path'),
       $repository->getHumanReadableDetail('local-path'));