Deadline: improve environment processing

[jakubjezek001]

Brief description

Better way of passing environments.

Description

In some occasions there was need for having default keys in job, even those were not yet used in previous dependency job so they could not be passed with list of filtered keys.

The procedure is working now following way.

1. default set of environment variables are compiled
2. next class attribute enviro_keys is iterated and found keys are included or overridden from 1. step
3. last step is taking class attribute environ_job_filter is iterated and available keys in previous job are included or overridden from 2. step

Testing notes:

1. publish to farm to your favourite host
2. all should work as before

[kalisp]

In AE it is failing for me on Publish job in DL because both OPENPYPE_RENDER and OPENPYPE_PUBLISH is marked as 1.

[jakubjezek001]

In AE it is failing for me on Publish job in DL because both OPENPYPE_RENDER and OPENPYPE_PUBLISH is marked as 1.

Its fixed now, tested in Nuke and works as expected.

[kalisp]

Working in AE