Fix Windows IE test timeouts in Events and Fetch service

[LeeDr]

Kibana version: master (6.0.0-alpha1)

Elasticsearch version: master

Server OS version: Windows 10

Browser version: IE 11

Browser OS version: Windows 10

Original install method (e.g. download page, yum, from source, etc.): dev testing

Description of the problem including expected versus actual behavior: Several browser tests are failing for me on Windows 10 with IE 11. At least one of them is a timeout at 10s. If I bump the timeout up to 20 seconds they pass. We know IE is slower than other browsers at some tasks. I think we should bump the timeout up to avoid false failures.

OR - is this really unacceptable performance on these tasks and we need to look into it instead of making the timeout longer?

Steps to reproduce:

1. npm run test:dev
2. When IE 11 browser opens, create new tab and paste
   http://localhost:9876/debug.html?grep=Fetch%20service

http://localhost:9876/debug.html?grep=Fetch%20service

Fetch service
#doc(docSource)
✓
fetches a single doc source7883ms
‣
#search(searchSource)
✖
fetches a single search source
‣
Error: timeout of 10000ms exceeded. Ensure the done() callback is being called in this test.

This test above passed when I changed the timeout to 20000ms. It actually passed in 9541ms in this case.

Passed again in 9698ms

Passed again in 10606ms

With some load applied on my laptop I can get them well past 10s;

Same with Events tests;

diff --git a/tasks/config/karma.js b/tasks/config/karma.js
index e19ea74..1fd83a5 100644
--- a/tasks/config/karma.js
+++ b/tasks/config/karma.js
@@ -36,7 +36,7 @@ module.exports = function (grunt) {
       client: {
         mocha: {
           reporter: 'html', // change Karma's debug.html to the mocha web reporter
-          timeout: 10000,
+          timeout: 20000,
           slow: 5000
         }
       }

[BigFunger]

The tests you listed are passing for me on master in just over 3 seconds.

[epixa]

The build on this is failing