some reengineering to support proper testing

lib/App/Netdisco/Worker/Plugin.pm

@@ -5,9 +5,11 @@ use Dancer::Plugin;
 
 use App::Netdisco::Util::Permission qw/check_acl_no check_acl_only/;
 use aliased 'App::Netdisco::Worker::Status';
-
 use Scope::Guard 'guard';
 
+Dancer::Factory::Hook->instance()->install_hooks("nd2_core_${_}")
+  for qw/check early main user/;
+
 register 'register_worker' => sub {
   my ($self, $first, $second) = plugin_args(@_);
 
@@ -76,7 +78,7 @@ register 'register_worker' => sub {
   };
 
   # store the built worker as Worker.pm will build the dispatch order later on
-  push @{ vars->{'workers'}
+  push @{ vars->{'workers'}->{$workerconf->{action}}
               ->{$workerconf->{phase}}
               ->{$workerconf->{namespace}}
               ->{$workerconf->{priority}} }, $worker;