network_manager: Reloads should be delayed via timer

Our restarts of systemd waited a short amount of time (3s) prior to
triggering in the past and didn't cause it to reconfigure immediately.
This allowed lan users to queue up a bunch of configuration commands
that would reconfigure the network before it applied.

This patch restores that behavior.

Change-Id: I4c3c589c07528a9d90e6d7e5d3b649688fcf4587
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/test/global_network_objects.cpp b/test/global_network_objects.cpp
index 1aa71b7..0f6550f 100644
--- a/test/global_network_objects.cpp
+++ b/test/global_network_objects.cpp
@@ -11,7 +11,7 @@
 
 std::unique_ptr<MockManager> manager = nullptr;
 std::unique_ptr<Timer> refreshObjectTimer = nullptr;
-std::unique_ptr<Timer> restartTimer = nullptr;
+std::unique_ptr<Timer> reloadTimer = nullptr;
 
 /** @brief refresh the network objects. */
 void refreshObjects()