Comment out opencv-python that is not installable on arm (#7426)

* Comment out opencv-python that is not installable on arm

* Disable import-error

homeassistant/components/opencv.py

@@ -88,7 +88,7 @@ CONFIG_SCHEMA = vol.Schema({
 
 def cv_image_to_bytes(cv_image):
     """Convert OpenCV image to bytes."""
-    import cv2
+    import cv2  # pylint: disable=import-error
 
     # pylint: disable=no-member
     encode_param = [int(cv2.IMWRITE_JPEG_QUALITY), 90]
@@ -103,7 +103,7 @@ def cv_image_to_bytes(cv_image):
 
 def cv_image_from_bytes(image):
     """Convert image bytes to OpenCV image."""
-    import cv2
+    import cv2  # pylint: disable=import-error
     import numpy
 
     # pylint: disable=no-member
@@ -112,7 +112,7 @@ def cv_image_from_bytes(image):
 
 def process_image(image, classifier_group, is_camera):
     """Process the image given a classifier group."""
-    import cv2
+    import cv2  # pylint: disable=import-error
     import numpy
 
     # pylint: disable=no-member

requirements_all.txt

@@ -418,7 +418,7 @@ oauth2client==4.0.0
 oemthermostat==1.1
 
 # homeassistant.components.opencv
-opencv-python==3.2.0.6
+# opencv-python==3.2.0.6
 
 # homeassistant.components.sensor.openevse
 openevsewifi==0.4

script/gen_requirements_all.py

@@ -15,6 +15,7 @@ COMMENT_REQUIREMENTS = (
     'pybluez',
     'beacontools',
     'bluepy',
+    'opencv-python',
     'python-lirc',
     'gattlib',
     'pyuserinput',