Allow phabricator to manage repositories

Summary:
This adds a configuration option for repositories to be marked as managed
by phabricator, which is then used by the pullLocal daemon to try to recover
from some errors it runs into.

Test Plan: Set a bogus uri for a repo, saw that the pullLocal daemon fixed it.

Reviewers: epriestley, vrana

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3680

src/applications/repository/controller/PhabricatorRepositoryEditController.php

@@ -509,6 +509,12 @@ final class PhabricatorRepositoryEditController
     $inset->setTitle('Repository Information');
 
     if ($has_local) {
+      $default_local_path = '';
+      $default =
+        PhabricatorEnv::getEnvConfig('repository.default-local-path');
+      if (!$repository->getDetail('remote-uri') && $default) {
+        $default_local_path = $default.strtolower($repository->getCallsign());
+      }
       $inset->appendChild(
         '<p class="aphront-form-instructions">Select a path on local disk '.
         'which the daemons should <tt>'.$clone_command.'</tt> the repository '.
@@ -519,7 +525,7 @@ final class PhabricatorRepositoryEditController
         id(new AphrontFormTextControl())
           ->setName('path')
           ->setLabel('Local Path')
-          ->setValue($repository->getDetail('local-path'))
+          ->setValue($repository->getDetail('local-path', $default_local_path))
           ->setError($e_path));
     } else if ($is_svn) {
       $inset->appendChild(