Not resetting effect to None, when using home assistant scenes

[TheJulianJES]

Fix for this issue: #169 (Board: NodeMCUv2, esp8266, hassio esphomeyaml addon "bleeding-edge" -> currently 1.8.1)

Home Assistant scene which are not working as expected:

- name: Example_Scene_Name_NOT_Working_1
  entities:
    light.led_1_strip:
      state: on
      rgb_color: [255,0,0]
      effect: None
      brightness: 200

only changes the effect to "None" but does not change the colors.

- name: Example_Scene_Name__NOT_Working_2
  entities:
    light.led_1_strip:
      state: on
      rgb_color: [255,0,0]
      effect: Flicker"
      brightness: 200

also only changes the effect to "Flicker" but does not change the colors. (Even if we're changing back to None through e.g. the hass interface)

{"state": "ON", "effect": "None"} works and turns the effect off, as expected. {"state": "ON", "color": {"r": 0, "g": 0, "b": 255}, "brightness": 200, "effect": "None"} only changes the effect to "None". {"state": "ON", "color": {"r": 0, "g": 0, "b": 255}, "brightness": 200, "effect": "Flicker"} only changes the effect to "Flicker".

Relevant esphomeyaml config entry:

light:
  - platform: rgb
    name: "led_1_strip"
    id: leds
    red: red_output
    green: green_output
    blue: blue_output
    gamma_correct: 1.0
    effects:
      - random:
      - strobe:
      - flicker:

Log entry (when activating the scene at the top, which doesn't do anything at all):

[16:17:16][VV][component:136]: Running defer '':0 with interval=0 last_execution=0 (now=1048895)
[16:17:16][V][light.state:152]: Interpreting light JSON.
[16:17:16][V][light.light_color_values:144]: Parsing light color values JSON.
[16:17:16][V][light.light_color_values:149]:     state=ON
[16:17:16][V][light.light_color_values:155]:     brightness=0.78
[16:17:16][V][light.light_color_values:164]:     r=0.00, g=0.00, b=1.00

[TheJulianJES]

It seems like that the json colors are correctly parsed (which can be seen in the log) but they are not used, since we are including "effect" in the payload (see: https://github.com/OttoWinter/esphomelib/blob/master/src/esphomelib/light/light_state.cpp#L163) (Why even parsing the json for colors, if effect, ... is included?)