deprecate ubuntu mate

Author: thelamer

readme-vars.yml

@@ -2,6 +2,7 @@
 
 # project information
 project_name: rdesktop
+project_deprecation_status: true
 project_lsio_github_repo_url: "https://github.com/linuxserver/docker-{{ project_name }}"
 full_custom_readme: |
   {% raw -%}