Windows & Linux build systems down

[apapirovski]

See https://ci.nodejs.org/job/node-test-commit/14829/, more specifically:

https://ci.nodejs.org/job/node-test-commit-linux/14956/
https://ci.nodejs.org/job/node-test-commit-windows-fanned/14294/

[apapirovski]

I take @mhdawson's inquiries in #1045 are related

[mhdawson]

We have ~24 windows machines and 11 linux machines at rackspace .....

[mhdawson]

Looks like all but our release machines are back.

CI run to validate things look like they are back to normal https://ci.nodejs.org/job/node-test-commit-linux/14958/

[apapirovski]

We're still seeing some weirdness with Windows it seems.

https://ci.nodejs.org/job/node-test-binary-windows/COMPILED_BY=vs2017,RUNNER=win10,RUN_SUBSET=0/13632/console

[mhdawson]

@joaocgreis can you take a look at the windows issues ?

[joaocgreis]

A manual run of git-clean-windows fixed it. https://ci.nodejs.org/job/node-test-binary-windows/13638/ happened to run right after, validating it.