Trim element collection in env property

[eutkin]

Issue #5615

[CLAassistant]

All committers have signed the CLA.

[jameskleeh]

As I said in the issue I'm not sure we can assume this is the desired behavior. It is easily avoided by simply not putting spaces in the config. This is also not backwards compatible

[osscontributor]

I see that this has been moved from 2.5.x to 3.0.x. If this is brought into 3.0, will there still be a way to express leading and trailing whitespace in a config value?

[eutkin]

I see that this has been moved from 2.5.x to 3.0.x. If this is brought into 3.0, will there still be a way to express leading and trailing whitespace in a config value?

only:

property:
  - 'one'
  - ' two'

[osscontributor]

@eutkin I see. I didn't run it but from looking at the PR it looked like that probably wouldn't work. Sorry for the noise.