Remove deprecated sudo from travis

[stsewd]

It will be removed soon
https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration

[codecov]

Codecov Report

Merging #4919 into master will decrease coverage by 1.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4919      +/-   ##
==========================================
- Coverage   76.75%   75.61%   -1.14%     
==========================================
  Files         158      158              
  Lines       10048    10048              
  Branches     1265     1265              
==========================================
- Hits         7712     7598     -114     
- Misses       1995     2132     +137     
+ Partials      341      318      -23

Impacted Files	Coverage Δ
readthedocs/search/views.py	30.23% <0%> (-44.19%)	⬇️
readthedocs/search/lib.py	18.03% <0%> (-37.71%)	⬇️
readthedocs/search/indexes.py	40.98% <0%> (-36.07%)	⬇️
readthedocs/restapi/utils.py	74.77% <0%> (-16.22%)	⬇️
readthedocs/core/templatetags/core_tags.py	60.65% <0%> (-8.2%)	⬇️
readthedocs/projects/tasks.py	70.2% <0%> (-1%)	⬇️

[stsewd]

Oh, we can use xenial too! https://blog.travis-ci.com/2018-11-08-xenial-release

[stsewd]

I'm not sure why ES isn't working on xenial :/

@safwanrahman any ideas here? Maybe we can follow this steps now? https://docs.travis-ci.com/user/database-setup/#installing-specific-versions-of-elasticsearch

[safwanrahman]

@stsewd I am hoping to get the ES6 merged, so we can rebase and check if the new version is also failing.

[stsewd]

Got it, we have till december 7th, if not, I can revert the xenial update and just remove sudo: false in this PR.

[stsewd]

I think I know where the problem is, we need java7

curl: (7) Failed to connect to 127.0.0.1 port 9200: Connection refused
Picked up _JAVA_OPTIONS: -Xmx2048m -Xms512m
Unrecognized VM option 'UseParNewGC'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit

[stsewd]

I was unable to install java7 on travis to make ES work :/, I'm just back to removing sudo here, hope we can get the new ES update merged soon.

[ericholscher]

Looks good. 👍

[humitos]

Is there anything missing here or we can merge it as is?

[stsewd]

Nope, we can merge this