Maya: Fix validate frame range repair + fix create render with deadline disabled

[BigRoy]

Brief description

This fixes:

• Maya: Set frame range repair action doesnt set frame handles according to DB #4272 - Now handles are set as expected if handleStart and handleEnd attribute exists on the instance
• Maya: Validate frame range repair action #3302 - Render Layer frame ranges are now also repaired - also works with explicit render layer overrides on a layer
• Create Render globals not working (errors) when Deadline module is disabled

Testing notes:

1. Test Create Render with Deadline module disabled and with it enabled in a scene that does not yet have a renderingMain globals.
2. Check with different start+end frame + handles settings for an asset on renderlayers, but also on other instances like pointcaches and cameras.

[LiborBatek]

Did a first run of tests with creating Render subset.

All works when creating render subset... when deadline is on and off.

So no issues found on Test (1)

[LiborBatek]

Test 02 - different frame start / end + frame handles setting and repair action

The repair action works on subsets (camera, review, animation etc) but it just set frame start and frame end according to absolute frame range as in DB (range + handles together) which sort of works but it doesnt respect the handle values in DB and the repair action doesnt put these values in. It behaves as in this PR #4272 aka same issue. So question is:
is it desirable to maintain frame start/end and frame handle start/end values exactly (as in DB) or just we care about absolute frame range so they match overall (maya scene / DB)

Another issue with repair action is when used on renderLayer and frame range overrides...it just fails and gives this error msg:

[LiborBatek]

Pls see comments, needs change doesnt work as expected.

[BigRoy]

@LiborBatek I'm pretty sure you were NOT running those tests on the code in this PR but were running it on a different branch. The line numbers in the error of your first screenshot here refer to very different lines in this PR. The same goes for the line numbers in the Error stack trace of your other screenshot.

Also the second test you've done is exactly what this PR should also solve. Are you sure you tested correctly?

[LiborBatek]

ouch my bad, I checkout correct PR but to wrong branch...and run the other!

[LiborBatek]

All works as expected. Creating render subset in any circumstances (with/without deadline running).
Repair action aslo works on all subsets and renderlayers as expected. Also sets correctly handle start and handle end. So it also resolves PR #4272

Here is scrncap before repair:

and after:

here is also DB values for check and all is ok...frame ranges are equal and handles set correctly in maya.