Naming client doesn't handle correctly the Elytron AuthenticationContext API.

• if the API is used then authentication fails (SASL mech is not configured as expected) - it fails in both cases: wildfly-config.xml present or not.

          AuthenticationContext.empty()
                  .with(MatchRule.ALL, AuthenticationConfiguration.EMPTY.useDefaultProviders().allowSaslMechanisms("ANONYMOUS"))
                  .run(() -> {
                      doLookup("http-remoting://127.0.0.1:8080");
                  });
  

• if the API is not used and wildfly-config.xml is present, then the client works correctly

  doLookup("http-remoting://127.0.0.1:8080");
  

  <configuration>
  	<authentication-client xmlns="urn:elytron:1.0">
  		<authentication-rules>
  			<rule use-configuration="authn" />
  		</authentication-rules>
  		<authentication-configurations>
  			<configuration name="authn">
  				<allow-sasl-mechanisms  names="ANONYMOUS"/>
  				<use-service-loader-providers />
  			</configuration>
  		</authentication-configurations>
  	</authentication-client>
  </configuration>
  

This blocks RFEs EAP7-567 and EAP7-284.