Add slash after metadataDir

Change-Id: I867acaf7a2d055254c1319f85740b37169685520
Related-PROD: https://mirantis.jira.com/browse/PROD-33875
diff --git a/src/com/mirantis/mk/ReleaseWorkflow.groovy b/src/com/mirantis/mk/ReleaseWorkflow.groovy
index d2d0e7d..3316c68 100644
--- a/src/com/mirantis/mk/ReleaseWorkflow.groovy
+++ b/src/com/mirantis/mk/ReleaseWorkflow.groovy
@@ -140,7 +140,7 @@
 
         def keySize = key.split(':').size() - 1
         if (dirdepth > 0 && dirdepth - 1 <= keySize) {
-            def dirPath = metadataDir + key.split(':')[0..dirdepth - 1].join('/')
+            def dirPath = metadataDir + '/' + key.split(':')[0..dirdepth - 1].join('/')
             if (!new File(dirPath).exists()) {
                 File newDirs = new File(dirPath)
                 newDirs.mkdirs()