Add UPDATES_MIRANTIS_VERSION for all used configurations

Related_Prod: PROD-36426

Change-Id: I87f0fe70fe4a97546aaed1f1d0928b17c3cabbdd
diff --git a/jobs/templates/heat-cicd-pike-dvr-sl.yml b/jobs/templates/heat-cicd-pike-dvr-sl.yml
index e3addca..537e8ed 100644
--- a/jobs/templates/heat-cicd-pike-dvr-sl.yml
+++ b/jobs/templates/heat-cicd-pike-dvr-sl.yml
@@ -202,6 +202,12 @@
         description: ''
         name: UPDATE_VERSION
         trim: 'false'
+    - string:
+        name: UPDATES_MIRANTIS_VERSION
+        default: 'staging'
+        description: |
+            Overwrite subsection of updates.mirantis.com repository.
+            Effective only if enabled in cookiecutter context!
     - bool:
         default: true
         description: Whether to perform dist-upgrade on virtual nodes during deployment