feat: add `expose` service entry for internal cluster traffic #1737

Job	Run time
lint-check	40s
lint-check	40s
Select Jobs	3s
Select Jobs	3s
Schedule (all, upstream, install) / Test	13m 37s
Schedule (all, upstream, install) / Test	13m 37s
Schedule (all, registry1, upgrade) / Test	20m 23s
Schedule (all, registry1, upgrade) / Test	20m 23s
Schedule (all, upstream, upgrade) / Test	30m 18s
Schedule (all, upstream, upgrade) / Test	18m 3s
Schedule (all, registry1, install) / Test	14m 51s
Schedule (all, registry1, install) / Test	14m 51s
Schedule (keycloak, registry1, install) / Test	6m 1s
Schedule (keycloak, registry1, install) / Test	6m 1s
Schedule (keycloak, upstream, install) / Test	5m 16s
Schedule (keycloak, upstream, install) / Test	5m 16s
	2h 50m 3s

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