Fix hss and mme tag typo in omec postmerge job

Change-Id: I6452920b5e9c407e55a295e815b8d58a9a923b13
diff --git a/jjb/pipeline/omec-postmerge.groovy b/jjb/pipeline/omec-postmerge.groovy
index 9df3600..f64757d 100644
--- a/jjb/pipeline/omec-postmerge.groovy
+++ b/jjb/pipeline/omec-postmerge.groovy
@@ -77,8 +77,8 @@
         }
         build job: "omec-deploy-staging", parameters: [
               string(name: 'hssdb_tag', value: "${hssdb_tag}"),
-              string(name: 'mme_tag', value: "${hss_tag}"),
-              string(name: 'hss_tag', value: "${mme_tag}"),
+              string(name: 'hss_tag', value: "${hss_tag}"),
+              string(name: 'mme_tag', value: "${mme_tag}"),
               string(name: 'spgwc_tag', value: "${spgwc_tag}"),
               string(name: 'spgwu_tag', value: "${spgwu_tag}"),
             ], quietPeriod: quietPeriodTime