Allow overwriteContainers to specify a securityContext #1176

Job	Run time
Supported Kubernetes versions End-to-End Tests (8.4.4, 1.30.4)	40m 38s
Supported Kubernetes versions End-to-End Tests (8.4.4, 1.31.0)	39m 28s
Integration tests with MySQL (8.0.28)	6m 35s
Supported Kubernetes versions End-to-End Tests (8.4.4, 1.32.0)	39m 27s
Supported MySQL versions End-to-End Tests (8.0.28, 1.32.0)	39m 24s
Integration tests with MySQL (8.0.39)	6m 39s
Upgrade Test	16m 33s
Supported MySQL versions End-to-End Tests (8.0.39, 1.32.0)	39m 24s
Integration tests with MySQL (8.0.40)	6m 38s
Integration tests with MySQL (8.0.41)	6m 48s
Supported MySQL versions End-to-End Tests (8.0.40, 1.32.0)	39m 21s
Integration tests with MySQL (8.4.4)	6m 40s
Supported MySQL versions End-to-End Tests (8.0.41, 1.32.0)	39m 20s
Supported MySQL versions End-to-End Tests (8.4.4, 1.32.0)	39m 21s
Confirm finishing all tests	1s
	6h 6m 17s

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