Add support of DIST_UPGRADE_NODES parameter

Add support of DIST_UPGRADE_NODES option for
deploy_openstack job, so that virtual nodes get
latest upgrades during environment deployment
(if the option is enabled).

Change-Id: Idc0b6a12005a31e676e3380ca23ee486ab5adbdd
Related-Prod:PROD-34252
diff --git a/jobs/templates/released-bm-pike-ovs.yml b/jobs/templates/released-bm-pike-ovs.yml
index a88b8ef..dbb8f1d 100644
--- a/jobs/templates/released-bm-pike-ovs.yml
+++ b/jobs/templates/released-bm-pike-ovs.yml
@@ -176,6 +176,15 @@
     - password:
         name: IPMI_PASS
         default: 'KBwdcRqwed3w2'
+    - string:
+        default: ''
+        description: ''
+        name: BATCH_SIZE
+        trim: 'false'
+    - bool:
+        default: false
+        description: Whether to perform dist-upgrade on virtual nodes during deployment
+        name: DIST_UPGRADE_NODES
     pipeline-scm:
       lightweight-checkout: false
       scm: