Tests with Keycloak container should not be started at Keycloak DEV mode

[michalvavrik]

We keep repeating this pattern

quarkus-test-suite/security/keycloak-authz-reactive/src/test/java/io/quarkus/ts/security/keycloak/authz/reactive/KeycloakAuthzSecurityReactiveIT.java

Line 13 in c92ab50

@KeycloakContainer(command = { "start-dev --import-realm --hostname-strict=false" })

mostly because we don't have configured HTTPS for all origins, but no users will actually do that in production, we need to have communication between Quarkus OIDC and Keycloak via secured channel and only start Keycloak in a production mode.