[MAINTENANCE] Ensure that validation operators are omitted from Cloud variables payload

[cdkini]

Changes proposed in this pull request:

• Add validation operators to exclude list
• Add basic logging for debugging purposes

Definition of Done

Please delete options that are not relevant.

• My code follows the Great Expectations style guide
• I have performed a self-review of my own code

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Legend

[Kilo59]

Could also do it like this.
Not necessarily better, feel free to leave it as you have it.
Too bad we can't use the := operator here 😢

Suggested change

	if attr in payload:
	payload.pop(attr)
	logger.debug(
	f"Removed {attr} from DataContextConfig while serializing to JSON"
	)
	removed = payload.pop(attr, None)
	if removed:
	logger.debug(
	f"Removed {attr} from DataContextConfig while serializing to JSON"
	)