Add to jenkins gerrit credentials with password

Change-Id: I870ae13f346111e234859688efb66f671ebcd83c
Related-prod: PROD-31174
(cherry picked from commit ef9eabf915abeafee6c6dacee37ba5c86b3bd555)
diff --git a/jenkins/client/job/deploy/update/kubernetes_update.yml b/jenkins/client/job/deploy/update/kubernetes_update.yml
index ee77583..419f969 100644
--- a/jenkins/client/job/deploy/update/kubernetes_update.yml
+++ b/jenkins/client/job/deploy/update/kubernetes_update.yml
@@ -18,7 +18,7 @@
             type: git
             url: "${_param:jenkins_gerrit_url}/mk/mk-pipelines"
             branch: "${_param:jenkins_pipelines_branch}"
-            credentials: "gerrit"
+            credentials: ${_param:jenkins_gerrit_credentials}
             script: k8s-upgrade-pipeline.groovy
           param:
             KUBERNETES_HYPERKUBE_SOURCE: