Add autoconfig support for Jersey (2)

Jersey 2 has some Spring support built in but it's a bit awkward to
use in a Boot app, so autoconfiguration seems appropriate. The tests
and sample show how to use it, but the short story is that any
@Component can define JAX-RS endpoints via @GET etc.

There's a sample for Jersey 1 as well (pay careful attention to
the plugin configuration if you want to build an executable jar)

Fixes gh-1651

spring-boot-samples/spring-boot-sample-jersey1/src/main/java/sample/jersey1/SampleJersey1Application.java

@@ -0,0 +1,47 @@
+package sample.jersey1;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.context.embedded.FilterRegistrationBean;
+import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+import com.sun.jersey.spi.container.servlet.ServletContainer;
+
+@Configuration
+@ComponentScan
+@EnableAutoConfiguration
+@Path("/")
+public class SampleJersey1Application {
+
+    public static void main(String[] args) {
+       new SpringApplicationBuilder(SampleJersey1Application.class).web(true).run(args);
+    }
+    
+    @GET
+    @Produces("text/plain")
+    public String hello() {
+    	return "Hello World";
+    }
+    
+    @Bean
+    // Not needed if Spring Web MVC is also present on claspath 
+    public TomcatEmbeddedServletContainerFactory tomcatEmbeddedServletContainerFactory() {
+    	return new TomcatEmbeddedServletContainerFactory();
+    }
+    
+    @Bean
+    public FilterRegistrationBean jersey() {
+    	FilterRegistrationBean bean = new FilterRegistrationBean();
+    	bean.setFilter(new ServletContainer());
+    	bean.addInitParameter("com.sun.jersey.config.property.packages", "com.sun.jersey;demo");
+		return bean;
+    }
+    
+}