Add openpilot tests

panda/tests/fan/fan_test.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+import time
+
+from panda import Panda
+
+if __name__ == "__main__":
+  p = Panda()
+  power = 0
+  while True:
+    p.set_fan_power(power)
+    time.sleep(5)
+    print("Power: ", power, "RPM:", str(p.get_fan_rpm()), "Expected:", int(6500 * power / 100))
+    power += 10
+    power %= 110