Everest-1312 [CLI] Deprecate `--operator.xtradb-cluster` flag #4179

Job	Run time
API Integration Tests (1.24.x, false)	15m 21s
Test (1.24.x, false)	11m 43s
Check (1.24.x, false)	3m 29s
CLI Integration Tests (1.24.x, false)	10m 56s
CLI tests (test-mongo-operator) / CLI test-mongo-operator	11m 28s
CLI tests (test-all-operators) / CLI test-all-operators	10m 11s
CLI tests (test-namespaces) / CLI test-namespaces	12m 20s
CLI tests (test-pg-operator) / CLI test-pg-operator	9m 19s
CLI tests (test-pxc-operator) / CLI test-pxc-operator	9m 36s
Merge Gatekeeper	5m 13s
	1h 39m 36s

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