/lib/udev/rules.d/61-autopilot3-uinput.rules is in python3-autopilot 1.6.0+17.04.20170313-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # Make local foreground session able to run autopilot
KERNEL=="uinput", SUBSYSTEM=="misc", TAG+="uaccess"
|