Maya: renderman displays needs to be filtered

[antirotor]

Bug fix

This changes allows skipping processing of display type of Renderman that doesn't produce any file output. It should fix publishing renders on farm where validator was expecting produced files from those unsupported display types.

How to test

1. Open Maya with Renderman
2. Load / Create scene for testing rendering
3. Create Rendering instance
4. Configure some render channels / displays

Running this should list all your displays currently present:

from rfm2.api.displays import get_displays


displays = get_displays()["displays"]
for name, display in displays.items():
    print(f"{name}: {display['driverNode']['type']}")

you should get bunch of d_openexr (per number of displays you've created)

5. Open Renderman IPR
6. After it did some work, run the above code again. You should get the same number of d_openexr plus one d_it. That's expected.
7. Now publish/submit you renders. Publishing script on farm should publish the renders.

Close #3241

[ynbot]

Task linked: OP-3298 Maya: renderman displays needs to be filtered

[m-u-r-p-h-y]

approving the PR.

we still need to investigate strange prman behavior with IPR session creating arbitrary displays and effectively switching multipart exr off, but this PR is good to go now.