Update Capability ServiceTarget/Builder to use the new Service API.

Capabilities provided by service are installed with org.jboss.as.controller.CapabilityServiceTarget#addCapability that uses the deprecated org.jboss.msc.service.Service API.

It is not possible to provide a capability provided by the new org.jboss.msc.Service API.

In particular, there is a chicken and egg issue between org.jboss.as.controller.CapabilityServiceTarget#addCapability that needs an instance of the service(and returns a CapabilityServiceBuilder) and org.jboss.msc.service.ServiceBuilder#provides that creates a Consumer instance to pass to the service instance before this one is set with org.jboss.msc.service.ServiceBuilder#setInstance.

new workflow should be:

CapabilityServiceBuilder serviceBuilder = context.getCapabilityServiceTarget().addCapability(CAP_NAME);
Consumer<MyValue> consumer = serviceBuilder.provides(CAP_NAME);

Service myService = new MyService(consumer);

serviceBuilder.setInstance(myService)
     .install();