Bugfix: Houdini Karma/Mantra collectors wrong indentation

[BigRoy]

Changelog Description

Fix indendations

Additional info

These would've broken in the case the "chunkSize" parm did not exist because render_products and files_by_aov would have been undefined variables.

Testing notes:

1. Publish Karma ROP instance
2. Publish Mantra ROP instance

(Also test instances without the chunkSize parm, likely from older legacy instances - but maybe best to reproduce by removing the parms manually?)

[MustafaJafar]

Looking good so far.
I tested the following variations for both Mantra and Karma:

1. Use smaller value than my scene frame range .. (cool, separated in tasks)
2. Use bigger value than my scene frame range .. (cool, appeared as one task)
3. Remove chunk size from nodes .. (cool too.)

---

I have some thought.. Let me think out loud.
[Not Related to this PR, I guess.]
The life cycle of fetching chunk size is:

1. collect_karma_rop.py.. (read chunkSize from node, save it in instance.data)
2. submit_houdini_render_deadline.py .. (which adds attribute defs in publisher UI)
   i. in get_attribute_defs default of cls.chunk_size is fetched from class attributes that can be overridden by ayon houdini deadline settings.
   ii. set job_info.ChunkSize to self.chunk_size

That life cycle made me question: Is chunk_size parm being ignored ?
I checked abstract_submit_deadline.py but I found chunkSize has a hard coded default.
While I'm not sure about it because I might have skipped something.
But, this test is some how confirm my concern.

Also, Another question which default value should chunkSize fall to ?
e.g. chunkSize parm in Houdini node or chunkSize in Ayon Houdini deadline settings ?

[mkolar]

Looking good and ready to merge. I'd say we can change the chunksize default in a different PR