Add Jenkins OWASP Markup Formatter plugin

  - antisamy-markup-formatter

Change-Id: Iee2a76350da704b56f7d46a6204cac830f5c9d8e
diff --git a/jenkins/client/init.yml b/jenkins/client/init.yml
index 633288c..409b3f3 100644
--- a/jenkins/client/init.yml
+++ b/jenkins/client/init.yml
@@ -22,6 +22,7 @@
         username: ${_param:jenkins_client_user}
         password: ${_param:jenkins_client_password}
       plugin:
+        antisamy-markup-formatter: {}
         artifactory: {}
         blueocean: {}
         build-blocker-plugin: {}