Work around long update check interval in controller with a restart

Previously, the base/proxy-and-update e2e test passed, because
the controller considered `latest < {booted,inactive}` an error state
and triggered an update check "quickly" (in 30 seconds).

This was changed with commit d8053bd
which changed the interpration of this state to `UpToDate` i.e. a
non-error state, therefore entering a long sleep of 1 hour.

As a work-around, we restart the controller to trigger an update check.
This is ugly and potentially hides bugs, should be eliminated once
the runtime configuration option is added.

testing/end-to-end/tests/base/proxy-and-update.nix

@@ -173,13 +173,17 @@ pkgs.testers.runNixOSTest {
         wait_for_logs(playos, expected_kiosk_logs)
 
     with TestCase("Controller is able to query the version"):
-        expected_controller_log = f"latest.*{current_version}"
-        wait_for_logs(playos,
-            expected_controller_log,
-            unit="playos-controller.service",
-            # this should not be longer than 30, could there be some
-            # DNS cache somehwere?
-            timeout=61)
+        expected_states = [
+            "GettingVersionInfo",
+            "UpToDate",
+            f"latest.*{current_version}"
+        ]
+
+        for state in expected_states:
+            wait_for_logs(playos,
+                state,
+                unit="playos-controller.service",
+                timeout=61)
 
     with TestCase("Controller installs the new upstream version") as t:
         next_version = "${nextVersion}"
@@ -191,6 +195,10 @@ pkgs.testers.runNixOSTest {
         update_server.add_bundle(next_version, filepath="/tmp/next-bundle.raucb")
         update_server.set_latest_version(next_version)
 
+        # reboot controller to trigger version check
+        # TODO: override config to reduce check interval instead
+        playos.systemctl("restart playos-controller.service")
+
         expected_states = [
             "Downloading",
             f"Installing.*{update_server.bundle_filename(next_version)}",