move Method def outside of the loop

Signed-off-by: olivier lamy <olamy@webtide.com>

Jenkinsfile

@@ -120,6 +120,9 @@ for (def jdk in jdks) {
     }
   }
 
+}
+
+
 // True if this build is part of the "active" branches
 // for Jetty.
 def isActiveBranch()
@@ -165,5 +168,5 @@ for (def jdk in jdks) {
           body: detail
   )
 }
-}
+
 // vim: et:ts=2:sw=2:ft=groovy