Add updates_mirantis repo to system model

The class itself is not attached to anything.
It should be attached to nodes via cluster modes (infra/init.yml)

Related-bug: PROD-36010
Change-Id: Ibb731ef980c4cd9633a6c6626915eb1c46fb89fc
diff --git a/linux/system/repo/mcp/updates_mirantis.yml b/linux/system/repo/mcp/updates_mirantis.yml
new file mode 100644
index 0000000..bec5689
--- /dev/null
+++ b/linux/system/repo/mcp/updates_mirantis.yml
@@ -0,0 +1,9 @@
+parameters:
+  linux:
+    system:
+      repo:
+        updates_mirantis:
+          source: "deb https://${_param:updates_mirantis_login}:${_param:updates_mirantis_password}@${_param:updates_mirantis_host}/${_param:updates_mirantis_version} xenial main"
+          key_url: "https://${_param:updates_mirantis_login}:${_param:updates_mirantis_password}@${_param:updates_mirantis_host}/${_param:updates_mirantis_version}/${_param:updates_mirantis_key_file}"
+          architectures: amd64
+          clean_file: True