Add webhook trigger into Jenkinsfile

Jenkinsfile

@@ -7,6 +7,19 @@ pipeline {
         }
     }
 
+    triggers {
+      GenericTrigger(
+        genericVariables: [[key: 'ref', value: '$.ref']],
+        causeString: 'Triggered on $ref',
+        printContributedVariables: true,
+        printPostContent: true,
+        silentResponse: false,
+        shouldNotFlatten: false,
+        regexpFilterText: '$ref',
+        regexpFilterExpression: 'refs/heads/' + BRANCH_NAME
+      )
+    }
+
     options {
         disableConcurrentBuilds()
         buildDiscarder(logRotator(numToKeepStr: '10', artifactNumToKeepStr: '10'))