Fix: filter_env not work when use {filter_env:true}

[bugkiwi]

filter_env not work when use {filter_env:true}; {filter_env:somestring} should not change process.env

Q	A
Bug fix?	yes
New feature?	no
BC breaks?	no
Deprecations?	no
Tests pass?	yes
Fixed tickets	no
License	MIT
Doc PR	https://github.com/pm2-hive/pm2-hive.github.io/pulls

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[mhassan1]

I was also bitten by this bug. It might be a good idea to open an issue for tracking purposes.

By the way, I noticed that filter_env: [''] got me the expected behavior of filter_env: true. It's ugly, but it works.