fix tests

Now, we verify only some references in cloned repository. Looks like output of
git show-ref --heads --tags is different from a version of git to another

Author: alexandresalome

tests/Gitonomy/Git/Tests/AdminTest.php

@@ -64,13 +64,14 @@ public function testClone($repository)
         $new = $repository->cloneTo($newDir, $repository->isBare());
         self::registerDeletion($new);
 
-        $oldRefs = $repository->getReferences()->getAll();
-        $newRefs = $new->getReferences()->getAll();
+        $newRefs = array_keys($new->getReferences()->getAll());
 
-        $this->assertEquals(array_keys($oldRefs), array_keys($newRefs), "same references in both repositories");
+        $this->assertTrue(in_array('refs/heads/master', $newRefs));
+        $this->assertTrue(in_array('refs/tags/0.1', $newRefs));
 
         if ($repository->isBare()) {
             $this->assertEquals($newDir, $new->getGitDir());
+        $this->assertTrue(in_array('refs/heads/new-feature', $newRefs));
         } else {
             $this->assertEquals($newDir.'/.git', $new->getGitDir());
             $this->assertEquals($newDir, $new->getWorkingDir());