Add test for Reaper HTTP management proxy when used with Stargate (#1… #2011

Job	Run time
Build image	2m 13s
Run kuttl tests (1.21, test-servicemonitors)	6m 59s
Run kuttl tests (1.21, test-user-defined-ns)	8m 7s
Run kuttl tests (1.21, test-all-deployments)	3m 21s
	20m 40s

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