Added retry step to aptly publishing during pkg build

Change-Id: Ie9521f39aab5f43af9513944c420f303ca91825e
diff --git a/build-extra-dpdk-pipeline.groovy b/build-extra-dpdk-pipeline.groovy
index 4d096ae..e9ac981 100644
--- a/build-extra-dpdk-pipeline.groovy
+++ b/build-extra-dpdk-pipeline.groovy
@@ -53,7 +53,9 @@
         }
         stage("publish") {
             aptly.snapshotRepo(APTLY_URL, APTLY_REPO, timestamp)
-            aptly.publish(APTLY_URL)
+            retry(2){
+              aptly.publish(APTLY_URL)
+            }
         }
        }
        } catch (Throwable e) {