Modify linux regular expression to handle process names with spaces

[ChadScott]

Fixes #1497

Tested on Ubuntu 14.04, Ubuntu 16.04, and CentOS 7.3

[adamleff]

Hi, @ChadScott! Thank you for your first PR to InSpec!

This is a great change, thank you. Can you please enhance the unit tests for this resource so that we make sure we don't have a future regression for this use case?

You'll need to add a sample line to the mock call here: https://github.com/chef/inspec/blob/master/test/unit/mock/cmd/ps-axoZ

... and then modify the tests accordingly here:

https://github.com/chef/inspec/blob/master/test/unit/resources/processes_test.rb

Let me know if any of this is unclear or if you need any assistance. Thank you again!

[adamleff]

Also @ChadScott it looks like you've got some failing unit tests for the existing behavior (lots of extra untrimmed space, for example). Please take a look at the Travis job and you'll see what I mean.

[ChadScott]

@adamleff the tests are failing in one case and it looks like it's because the .+ is greedy instead of the \s+... I'm looking into how to better optimize that. Stand by.

[ChadScott]

a3b70ab addresses your concerns, I believe.

[ChadScott]

Well, now it appears to be failing on my CentOS instance.

Let me hack at it a bit more.

[ChadScott]

Disregard my local failure. It was the wrong gem (wasn't using my local copy)... I've validated this change against a real-world environment on Ubuntu 14.04, Ubuntu 16.04, and CentOS 7.3.

Should be okay to merge.

[adamleff]

Looks solid to me! Thanks, @ChadScott!

[arlimus]

Sweet, thank you so much @ChadScott !!
kudos @adamleff for your review