Add new Opencontrail repository class

Use mirror.mirantis.com

Change-Id: I72c7c7753f5a21b18bf5f6f1e47c537e554b8d19
Related-PROD: PROD-25035
diff --git a/defaults/linux_system_repo.yml b/defaults/linux_system_repo.yml
index 880194f..00c91bd 100644
--- a/defaults/linux_system_repo.yml
+++ b/defaults/linux_system_repo.yml
@@ -32,6 +32,10 @@
     linux_system_repo_update_mirantis_openstack_url: ${_param:linux_system_repo_update_url}/openstack-${_param:openstack_version}/
     linux_system_repo_hotfix_mirantis_openstack_url: ${_param:linux_system_repo_hotfix_url}/openstack-${_param:openstack_version}/
     #
+    linux_system_repo_opencontrail_url: ${_param:linux_system_repo_url}/opencontrail-${_param:opencontrail_version}/
+    linux_system_repo_update_opencontrail_url: ${_param:linux_system_repo_update_url}/opencontrail-${_param:opencontrail_version}/
+    linux_system_repo_hotfix_opencontrail_url: ${_param:linux_system_repo_hotfix_url}/opencontrail-${_param:opencontrail_version}/
+    #
     linux_system_repo_ubuntu_url: ${_param:linux_system_repo_url}/ubuntu/
     linux_system_repo_update_ubuntu_url: ${_param:linux_system_repo_update_url}/ubuntu/
     linux_system_repo_hotfix_ubuntu_url: ${_param:linux_system_repo_hotfix_url}/ubuntu/