Add tagged_mcp_version parameter to reflect MU release version

Related-Prod: PROD-34366
Change-Id: I79a73109c0de6e05167c50bcb2483c43011ac360
diff --git a/classes/cluster/mcp-offline/infra/apt01_dummy.yml b/classes/cluster/mcp-offline/infra/apt01_dummy.yml
index ea766e0..4f2e4a2 100644
--- a/classes/cluster/mcp-offline/infra/apt01_dummy.yml
+++ b/classes/cluster/mcp-offline/infra/apt01_dummy.yml
@@ -22,6 +22,7 @@
     # Don't set it "false" before you configure sudo policies and enable power users.
     # linux_system_user_sudo: true
     mcp_version: "2019.2.0"
+    tagged_mcp_version: "2019.2.6"
 #    mcp_version: "proposed"
     aptly_server_hostname: apt
     aptly_server_address: 127.0.0.1