Add openpilot tests

panda/tests/rtc_test.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python
+import datetime
+
+from panda import Panda
+
+if __name__ == "__main__":
+  p = Panda()
+
+  p.set_datetime(datetime.datetime.now())
+  print(p.get_datetime())