Add httplib2 to h.c.google requirements (#15385)

homeassistant/components/calendar/google.py

@@ -4,7 +4,6 @@ Support for Google Calendar Search binary sensors.
 For more details about this platform, please refer to the documentation at
 https://home-assistant.io/components/binary_sensor.google_calendar/
 """
-# pylint: disable=import-error
 import logging
 from datetime import timedelta
 

homeassistant/components/google.py

@@ -25,6 +25,7 @@ from homeassistant.util import convert, dt
 
 REQUIREMENTS = [
     'google-api-python-client==1.6.4',
+    'httplib2==0.10.3',
     'oauth2client==4.0.0',
 ]
 

requirements_all.txt

@@ -423,6 +423,7 @@ home-assistant-frontend==20180709.0
 # homeassistant.components.homematicip_cloud
 homematicip==0.9.6
 
+# homeassistant.components.google
 # homeassistant.components.remember_the_milk
 httplib2==0.10.3