Conform to function declaration standards

- declare desc variable
- declare all positional arguments
- set the cmd
- properly handle DOKKU_APP_NAME

subcommands/list

@@ -5,6 +5,9 @@ source "$PLUGIN_BASE_PATH/common/functions"
 source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/functions"
 
 postgres-list-cmd() {
+  declare desc="list all $PLUGIN_SERVICE services"
+  local cmd="$PLUGIN_COMMAND_PREFIX:list" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
+
   service_list
 }