The RTS module needs `org.jboss.resteasy.resteasy-client` in its dependencies

When loading the rts modules, WildFly complains about the lack of `org.jboss.resteasy.resteasy-client` among its dependencies.

The Narayana team noticed this behaviour while running Narayana's testsuite. In fact, when WildFly is told to load `org.jboss.narayana.rts` among its modules (e.g. `Dependencies: org.jboss.narayana.rts` -> `MANIFEST.MF`), some tests in the RTS module of Narayana fail because `org.jboss.resteasy.resteasy-client` is missing (on the server side). We have noticed that adding this dependency in the module `org.jboss.narayana.rts` of WildFly fixes the problem.