Allow generating requirements_all.txt

MANIFEST.in

homeassistant/components/light/blinksticklight.py

homeassistant/components/light/rfxtrx.py

homeassistant/components/light/tellstick.py

homeassistant/components/light/zwave.py

homeassistant/components/sensor/rfxtrx.py

homeassistant/components/sensor/tellstick.py

homeassistant/components/sensor/transmission.py

homeassistant/components/sensor/zwave.py

homeassistant/components/switch/hikvisioncam.py

homeassistant/components/switch/orvibo.py

homeassistant/components/switch/rfxtrx.py

homeassistant/components/switch/tellstick.py

homeassistant/components/switch/transmission.py

homeassistant/components/switch/zwave.py

requirements_all.txt

script/gen_requirements_all.py