changed dictionary attribute or variable name 'keys' to 'ssh_keys' due to possible reservation of prior

group_vars/vps.yml

@@ -9,7 +9,7 @@ origin: ""
 # <str<enum>> representing Linux distro or OS image available in VPS service to be used for VPS
 operating_system: ~
 # <list[<str>]> of control node or local SSH key basenames
-keys: []
+ssh_keys: []
 # <dict[<str>:<dict>]> package groups
 pkgs:
   # <dict[<str>:<dict>]> representing package groups installed by package manager via repositories