Fix defaults update|hotfix urls

Change-Id: I6b1bda4da84b5522cb43eb2310d4c72e0072276d
diff --git a/defaults/linux_system_repo.yml b/defaults/linux_system_repo.yml
index b59437d..0b3d197 100644
--- a/defaults/linux_system_repo.yml
+++ b/defaults/linux_system_repo.yml
@@ -4,11 +4,11 @@
     linux_repo_refresh_db: true
     linux_system_repo_url: "http://mirror.mirantis.com/${_param:apt_mk_version}/"
     # Global-updates
+    linux_system_repo_update_url: http://mirror.mirantis.com/update/${_param:apt_mk_version}/
     linux_system_repo_update_ubuntu_url: ${_param:linux_system_repo_update_url}/ubuntu/
-    linux_system_repo_update_url: ${_param:linux_system_repo_url}/update/${_param:apt_mk_version}/
     # Global-hotfix
+    linux_system_repo_hotfix_url: http://mirror.mirantis.com/hotfix/${_param:apt_mk_version}/
     linux_system_repo_hotfix_ubuntu_url: ${_param:linux_system_repo_hotfix_url}/ubuntu/
-    linux_system_repo_hotfix_url: ${_param:linux_system_repo_url}/hotfix/${_param:apt_mk_version}/
 
     # Per repos
     linux_system_repo_mcp_aptly_url: ${_param:linux_system_repo_url}/aptly/