Give getAlmanacServiceURI() an "options" parameter to prepare for read-only devices

Summary:
Depends on D19355. Ref T10883. Ref T13120. Rather than adding a million parameters here, wrap the selector-parameters in an `$options`.

The next change adds a new "writable" option to support forcing selection of writable hosts.

Test Plan: Pulled and pushed via HTTP and SSH, viewed repositories via Diffusion.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13120, T10883

Differential Revision: https://secure.phabricator.com/D19356

src/applications/diffusion/controller/DiffusionServeController.php

@@ -431,10 +431,12 @@ final class DiffusionServeController extends DiffusionController {
 
     $uri = $repository->getAlmanacServiceURI(
       $viewer,
-      $is_cluster_request,
       array(
-        'http',
-        'https',
+        'neverProxy' => $is_cluster_request,
+        'protocols' => array(
+          'http',
+          'https',
+        ),
       ));
     if ($uri) {
       $future = $this->getRequest()->newClusterProxyFuture($uri);