refactor: setup app domains in the post-create hook

This is more consistent with app setup, at the cost of making it so developers must disable domains manually afterwards.

plugins/domains/post-create

@@ -3,17 +3,17 @@ source "$PLUGIN_AVAILABLE_PATH/domains/functions"
 set -eo pipefail
 [[ $DOKKU_TRACE ]] && set -x
 
-trigger-domains-domains-setup() {
+trigger-domains-post-create() {
   declare desc="creates vhost files as necessary"
-  declare trigger="domains-setup"
+  declare trigger="post-create"
   declare APP="$1"
 
   if [[ "$(is_app_vhost_enabled "$APP")" == "false" ]]; then
-    dokku_log_info1 "App virtual host support disabled, skipping domains setup"
+    dokku_log_info1 "App virtual host support disabled, skipping domain setup"
     return
   fi
 
   domains_setup "$APP"
 }
 
-trigger-domains-domains-setup "$@"
+trigger-domains-post-create "$@"