Support hystrix global SetterFactory and FallbackFactory

[ScienJus]

Your scenes

describe your use scenes (why need this feature)

from sofastack/sofa-rpc-boot-projects#135 (comment)

In sofa-rpc-boot-project and sofa-boot, the user cannot register SetterFactory and FallbackFactory with ConsumerConfig.

So we provide some global settings that allow the user to create a single factory and loaded by all consumers, for example:

public class GlobalFallbackFactory implements FallbackFactory {
    @Override
    public Object create(FallbackContext context) {
        String interface = context.getRequest().getInterfaceId();
        if ("xxx.a.Service".equals(interface)) {
            return new ServiceAFallback();
        }
        if ("xxx.b.Service".equals(interface)) {
            return new ServiceBFallback();
        }
        return null;
    }
}

SofaHystrixConfig.registerGlobalFallbackFactory(new GlobalFallbackFactory());