Apply TIMEOUT_SCALE twice when needed

When TIMEOUT_SCALE is set for a worker and the command line also
provides the value, apply both.

Author: rclobus

lib/OpenQA/Worker/Job.pm

@@ -222,7 +222,13 @@ sub start ($self) {
     # update settings received from web UI with worker-specific stuff
     my $worker = $self->worker;
     my $global_worker_settings = $worker->settings->global_settings;
+    # TIMEOUT_SCALE: apply the factors from both the job settings and the worker settings
+    my $timeout_scale = $global_worker_settings->{TIMEOUT_SCALE} // 1;
+    $timeout_scale *= $job_settings->{TIMEOUT_SCALE} // 1;
     @{$job_settings}{keys %$global_worker_settings} = values %$global_worker_settings;
+    if ($timeout_scale != 1) {
+      $job_settings->{TIMEOUT_SCALE} = $timeout_scale;
+    }
 
     # set OPENQA_HOSTNAME environment variable (likely not used anywhere but who knows for sure)
     my $client = $self->client;