fix: flush daemon subscriptions before platform inventory test requests

The inventory and disclosure test helpers subscribed on one connection and
requested on another, so a request could reach the server before its SUBs
and fail with no responders under load.

spinifex/daemon/daemon_handlers_platform_inventory_test.go

@@ -164,6 +164,9 @@ func newInventoryCluster(t *testing.T) *inventoryCluster {
 	d.placementGroupService = groups
 	d.launchTemplateService = templates
 	require.NoError(t, d.subscribeAll())
+	// The caller is a separate connection, so the server must hold the SUBs
+	// before it publishes or the request can see no responders.
+	require.NoError(t, nc.Flush())
 
 	c.caller, err = nats.Connect(ns.ClientURL())
 	require.NoError(t, err)

spinifex/daemon/platform_disclosure_current_behaviour_test.go

@@ -61,6 +61,9 @@ func newDisclosureCluster(t *testing.T) *disclosureCluster {
 	require.NoError(t, err)
 	d.wirePlatformTagIndex()
 	require.NoError(t, d.subscribeAll())
+	// The caller is a separate connection, so the server must hold the SUBs
+	// before it publishes or the request can see no responders.
+	require.NoError(t, nc.Flush())
 
 	caller, err := nats.Connect(ns.ClientURL())
 	require.NoError(t, err)