* Update request requirement

Update request requirement from version v2.14.2 to v2.18.4

* Fix dependency vizio integration

3rd patry packages were removed from requests. Changed dependency from requests to urllib3

* forgot =

forgot = when adding the requirement

* re-run script/gen_requirements_all.py

re-run script/gen_requirements_all.py

* Unvendoring urllib3 from requests

In v2.16.0 and newer of requests they unverdored urllib3.

* undefined name 'InsecureRequestWarning'

* Removed requirement to 'urllib3==1.22

* removed import requests

* removed urllib3.exceptions.InsecureRequestWarning

removed urllib3.exceptions.InsecureRequestWarning travis lint