Fix PWM reset bug

[DimaRU]

Fixing a bug where PWM isn't reset, leading to jerky RAE movement when camera driver launched.

Launch log excerpt

[INFO] [launch.user]: Resetting PWM.
[INFO] [busybox devmem 0x20320180 32 0x00000000-14]: process started with pid [274]
[busybox devmem 0x20320180 32 0x00000000-14] /bin/sh: 1: busybox: not found
[ERROR] [busybox devmem 0x20320180 32 0x00000000-14]: process has died [pid 274, exit code 127, cmd 'busybox devmem 0x20320180 32 0x00000000'].

Code which execute busybox command:

rae-ros/rae_camera/launch/rae_camera.launch.py

Lines 19 to 21 in 79e017e

	reset_pwm = ExecuteProcess(
	cmd=[['busybox devmem 0x20320180 32 0x00000000']],
	shell=True

The solution is to install busybox into docker image.