Merge pull request #1173 from DeterminateSystems/queue-runner-exporter

hydra-queue-runner metrics

t/Hydra/Config/include.t

@@ -20,6 +20,7 @@ write_file($ctx{'tmpdir'} . "/bar.conf", q|
 |);
 
 is(getHydraConfig(), {
+    queue_runner_metrics_address => "127.0.0.1:0",
     foo => { bar => "baz" }
 }, "Nested includes work.");
 

t/lib/HydraTestContext.pm

@@ -51,6 +51,7 @@ sub new {
     $ENV{'HYDRA_CONFIG'} = "$dir/hydra.conf";
 
     my $hydra_config = $opts{'hydra_config'} || "";
+    $hydra_config = "queue_runner_metrics_address = 127.0.0.1:0\n" . $hydra_config;
     if ($opts{'use_external_destination_store'} // 1) {
         $hydra_config = "store_uri = file:$dir/nix/dest-store\n" . $hydra_config;
     }