manifest: Switch to our fork of external/robolectric

Change-Id: Ie0a33efca31e3f0b29d499dda87b0bbaa850548f
1 file changed
tree: 07bb04eec00df6e4ab25e0c4e5a17051a96eeddd
  1. snippets/
  2. default.xml
  3. README.mkdn