[robots] Add PR2 robot.

unittest/test_load.py

@@ -139,6 +139,9 @@ class RobotTestCase(unittest.TestCase):
     def test_laikago(self):
         self.check("laikago", 19, 18)
 
+    def test_pr2(self):
+        self.check("pr2", 41, 36)
+
     def test_talos_box(self):
         self.check("talos_box", 39, 38)