Java 15035 (#13421)

* [JAVA-15035] Created module httpclient4 and moved related code

* [JAVA-15035] Upgraded httpclient-simple to spring-boot-e

* [JAVA-15035] Moved modules to to right profiles

* [JAVA-15026] Upgraded headers code to apache 5.2 + moved code related to 4.5 to httpclient4 module

* [JAVA-14911] Final clean up for http-client module

---------

Co-authored-by: panagiotiskakos <panagiotis.kakos@libra-is.com>

httpclient4/src/main/java/com/baeldung/web/controller/BarController.java

@@ -0,0 +1,31 @@
+package com.baeldung.web.controller;
+
+import com.baeldung.web.dto.Bar;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+@RequestMapping(value = "/bars")
+public class BarController {
+
+    @Autowired
+    private ApplicationEventPublisher eventPublisher;
+
+    public BarController() {
+        super();
+    }
+
+    // API
+
+    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
+    @ResponseBody
+    public Bar findOne(@PathVariable("id") final Long id) {
+        return new Bar();
+    }
+
+}