Merge pull request #3578 from edx/feanil/put_in_xenial_timing

Add xenial timing.

.travis.yml

 # Travis CI configuration file for running tests
 language: python
-
 python:
   - "2.7"
 
+branches:
+  only:
+  - master
+
 services:
   - docker
   

util/parsefiles_config.yml

@@ -18,6 +18,7 @@ weights:
   - xqueue: 2
   - trusty-common: 5
   - precise-common: 4
+  - xenial-common: 6
   - ecommerce: 6 
   - rabbitmq: 2
   - automated: 1
@@ -25,3 +26,4 @@ weights:
   - mysql: 2
   - elasticsearch: 7
   - docker-tools: 3
+  - tools_jenkins: 8