subcommand restructure and bashstyle refactor. closes #1579

plugins/domains/install

@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_AVAILABLE_PATH/domains/functions"
 shopt -s nullglob
 
 for app in $DOKKU_ROOT/*/CONTAINER; do
   APP=$(basename "$(dirname "$app")");
-  dokku domains:setup "$APP"
+  domains_setup "$APP"
 done