[tcp-qa] add option to update salt to create-mcp-env

The "Deploy Openstack" pipeline now supports updating saltstack before
deploying components. This patch adds this option to the "tcp-qa" jobs
stack.

Closes-Bug: PROD-35376
Change-Id: I4b45d6f4a1997d05629f931eee5bb4e77780de41
diff --git a/jobs/templates/bm-cicd-pike-ovs-maas.yml b/jobs/templates/bm-cicd-pike-ovs-maas.yml
index 6b7c1db..d3bf097 100644
--- a/jobs/templates/bm-cicd-pike-ovs-maas.yml
+++ b/jobs/templates/bm-cicd-pike-ovs-maas.yml
@@ -196,6 +196,10 @@
         default: true
         description: Whether to perform dist-upgrade on virtual nodes during deployment
         name: DIST_UPGRADE_NODES
+    - bool:
+        default: true
+        description: 'Works starting from MCP 2019.2.10 or master. Whether to apply saltstack updates on all nodes in cluster before deployment'
+        name: UPGRADE_SALTSTACK
     pipeline-scm:
       lightweight-checkout: false
       scm: