Add GroupsControlpanel test when the user is not a Manager #13158

Job	Run time
Core Basic (18.x)	6m 50s
Core Blocks (18.x)	7m 31s
Core Basic (20.x)	6m 45s
Core Basic - Plone 5 (18.x)	7m 0s
Core Blocks (20.x)	7m 30s
Core Blocks - Listing (18.x)	5m 5s
Core Blocks - Listing (20.x)	5m 9s
Core Content (18.x)	3m 38s
Coresandbox (18.x)	3m 54s
Core Content (20.x)	2m 55s
Core Control Panels (18.x)	4m 15s
Core Volto Slate (18.x)	6m 53s
Core Control Panels (20.x)	4m 27s
Core Volto Slate (20.x)	7m 2s
Project Generator (18.x)	5m 39s
Multilingual (18.x)	3m 51s
Project Generator (20.x)	5m 22s
Multilingual in Seamless Mode (18.x)	3m 29s
Seamless Mode (18.x)	7m 18s
Working Copy (18.x)	3m 8s
	1h 47m 41s

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