Move URI from configuration to Endpoint.
Configurable use of dummy client in CXF Client Provider.

By default, CXFClientProvider does not use a dummy client.
In order to use it, a CXFCConfiguration specifying to use it must be given to the CXFClientProvider.

When CXFClientProvider is not using a dummy client, it requires given apiClass to be annotated with JAX-RS annotations.
Add JX-RS annotations to IApplicationClient.

It is required for ICXFClientProvider being able to instantiate the client.
Check endpoint has URI before seting JAXRSClientFactoryBean address.
Merge branch 'master' into feature/jaxrs-client-provider

Conflicts:
	clientprovider/src/main/java/org/mqnaas/client/cxf/InternalCXFClientProvider.java
	core.clientprovider/src/main/java/org/opennaas/core/client/cxf/ICXFAPIProvider.java
	core.clientprovider/src/main/java/org/opennaas/core/other/Endpoint.java
	core.clientprovider/src/main/java/test/ClientApplication.java

Conflicts solved manually.
Merge pull request #14 from isartcanyameres/feature/jaxrs-client-provider

Feature/jaxrs client provider