[docs] Added mention of Debian 11 (Bullseye) #285

Related to #285

Author: nemesifier

README.md

@@ -10,7 +10,7 @@ ansible-openwisp2
 
 Ansible role that installs the openwisp2 controller.
 
-Tested on **debian**, **ubuntu**.
+Tested on **Debian (Buster, Bullseye)**, **Ubuntu (18/20 LTS)**.
 
 **NOTE**: it is highly suggested to use this procedure on clean virtual machines or linux containers.
 

meta/main.yml

@@ -24,6 +24,7 @@ galaxy_info:
         # https://github.com/openwisp/ansible-openwisp2/issues/169#issuecomment-592983139
         # - stretch
         - buster
+        - bullseye
     - name: Ubuntu
       versions:
         # (send patch if you want this to be supported!)