Ability to upgrade nodes before deployment start

PROD-34252

Change-Id: I2b2f86a504aa7feaef770c71c952080ce0c36307
diff --git a/jenkins/client/job/deploy/openstack.yml b/jenkins/client/job/deploy/openstack.yml
index 8b82037..6bbbffa 100644
--- a/jenkins/client/job/deploy/openstack.yml
+++ b/jenkins/client/job/deploy/openstack.yml
@@ -29,6 +29,10 @@
               type: string
               default: ''
               description: 'Use batching for states, which targeted for large amount of nodes. Can be Integer or Percentage, e.g 20 or 20%'
+            DIST_UPGRADE_NODES:
+              type: boolean
+              default: 'false'
+              description: 'Whether to run "apt-get dist-upgrade" on all nodes in cluster before deployment'
             # salt master
             SALT_MASTER_CREDENTIALS:
               type: string