Update etl-gardener-universal.yml

[stephen-soltesz]

This change updates the gardener configuration to use the processor-node:true node selector for multiple processor jobs other than just the gardener.

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This change is 

[coveralls]

Pull Request Test Coverage Report for Build 3708

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.1%) to 78.318%

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Files with Coverage Reduction	New Missed Lines	%
ops/actions.go	2	40.13%
<!--	Total:	2		-->

Totals
Change from base Build 3705:	-0.1%
Covered Lines:	1257
Relevant Lines:	1605

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💛 - Coveralls