Move tableless route in single to TablelessRouteEngineFactory and refactor single validator #12981

Job	Run time
Import Global Environment / init-environment	3s
Build E2E Image	8m 5s
E2E - Agent with MySQL (proxy, tracing, jaeger)	6m 24s
E2E - Agent with MySQL (proxy, tracing, zipkin)	7m 19s
E2E - Agent with MySQL (proxy, metrics, prometheus)	6m 54s
E2E - Agent with MySQL (proxy, logging, file)	7m 1s
E2E - Agent with MySQL (jdbc, logging, file)	6m 54s
E2E - Agent with MySQL (jdbc, metrics, prometheus)	6m 35s
E2E - Agent with MySQL (jdbc, tracing, jaeger)	6m 40s
E2E - Agent with MySQL (jdbc, tracing, zipkin)	6m 59s
	1h 2m 54s

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