Get kibana building and running tests on windows for kibana-ci

[liza-mae]

We need to get kibana building and running tests on Windows worker machine for Jenkins CI on kibana-ci. This is for @AlonaNadler to publish Kibana support matrix.

Phase 1: Running tests against snapshots
Phase 2: Building Kibana and running tests against source

Phase 1

• Replace xvfb with headless chrome
• Selenium tests
• X-Pack tests
• Unit tests
• CI setup scripts
• Test setup scripts
• Jenkins jobs against snapshots

Phase 2

• Build Kibana on windows
• Jenkins jobs against PRs and periodic timer based branch tests on source

I have setup the machines to develop and test this. I will create the PRs for the Jenkins jobs and setup scripts for windows and John said he can help out to replace xvfb with headless chrome. I will update the issue accordingly as new items pop-up.

[liza-mae]

a) Currently blocked by: #19633, it is not tagged for 6.4.0, needs to be determined if this can be fixed or if it is a limitation, we know why it is failing, as reference: nodejs/node#12378 cc: @tylersmalley

b) Also according to @jbudz deb and rpm packages don't build on Windows. When I tried I got the error described in: jordansissel/fpm#653, which appears to be a limitation cc: @jordansissel

@epixa , @AlonaNadler:

1. if we can fix a) would it be for 6.4.0 or next release?
2. if we can fix a) are we okay with skipping the deb/rpm build packages on Windows and adding a note about it in the support matrix?

[jbudz]

For the support matrix I don't think we should worry about the build process. It's more of a development concern so we have a note in the contributing.md about windows, but it's not something end users are expected to interact with.

[liza-mae]

PR: #21972

[liza-mae]

Issue: #22094

[liza-mae]

I have all the tests running on windows for baseline 6.4. The functional tests have some failures that are consistent with flaky/failed tests, nothing windows specific. No failures on the x-pack functional tests. The other tests appear to be windows specific and some of the code needs updating, I am working on those. The problem with exiting processes on windows impacts all these tests, I have put in a couple of workarounds so far, looking into other cases.

[liza-mae]

elastic/content#2590

[liza-mae]

We now have Kibana tests running on Windows snapshots for Selenium and X-Pack.

https://internal-ci.elastic.co/job/elastic+kibana+6.5-snapshot+multijob-x-pack-win/1/console
https://internal-ci.elastic.co/job/elastic+kibana+6.5-snapshot+multijob-selenium-win/6/console

Thanks greatly to Spencer and Tyler for helping me get it to this point :) !

**Side note for other platforms: As part of this I also added Linux and Darwin to these tests - but infra does not yet have any Darwin nodes and I will break up the Linux ones to specific OS as part of the matrix and I will be looking to add more coverage for rpm and deb packages with additional tests shortly.

[liza-mae]

cc: @AlonaNadler @epixa