Expose webServer from ReactiveWebServerApplicationContext

Closes gh-9746

Author: mbhave

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/reactive/context/ReactiveWebServerApplicationContext.java

@@ -89,6 +89,15 @@ private void createWebServer() {
 		initPropertySources();
 	}
 
+	/**
+	 * Returns the {@link WebServer} that was created by the context or {@code null} if
+	 * the server has not yet been created.
+	 * @return the web server
+	 */
+	public WebServer getWebServer() {
+		return this.webServer;
+	}
+
 	/**
 	 * Return the {@link ReactiveWebServerFactory} that should be used to create the
 	 * reactive web server. By default this method searches for a suitable bean in the