add gitlab webhook

src/main/java/cn/qg/holmes/controller/pipline/PiplineController.java

+package cn.qg.holmes.controller.pipline;
+
+import cn.qg.holmes.common.JsonResult;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.BufferedReader;
+
+@Slf4j
+@RestController
+@CrossOrigin
+@RequestMapping("/pipline")
+public class PiplineController {
+
+    @PostMapping("/webhook")
+    public JsonResult piplineWebhook(HttpServletRequest request) {
+        StringBuilder piplineData = new StringBuilder();
+        try {
+            BufferedReader br = request.getReader();
+            String str = "";
+            while((str = br.readLine()) != null){
+                piplineData.append(str);
+            }
+            br.close();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        log.info("发送过来的pipline数据为：{}", piplineData);
+        return JsonResult.buildSuccessResult(true);
+    }
+}