Fix power LED pin number in manager.py
Fix power LED pin number in manager.py

tybtab/dosenet-raspberrypi,yarocoder/dosenet-raspberrypi,cllamb0/dosenet-raspberrypi,bearing/dosenet-raspberrypi,yarocoder/dosenet-raspberrypi,bearing/dosenet-raspberrypi,tybtab/dosenet-raspberrypi,cllamb0/dosenet-raspberrypi