Fixing old Jenkinsfile

Change-Id: I86bc4d3d84683dd14d61b279f02474eaf1651d34
diff --git a/Jenkinsfile b/Jenkinsfile
index a6cf4da..013662a 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -224,7 +224,7 @@
  * @param ip      the IP address to substitute
  */
 def createMACIPbindingStr(counter, mac, ip) {
-    return """\\'host fabric${counter} {'\n'hardware ethernet ${mac}';''\n'fixed-address ${ip}';''\n'}\\'"""
+    return """host fabric${counter} {'\n'hardware ethernet ${mac}';''\n'fixed-address ${ip}';''\n'}"""
 }
 
 /**