[updater] fix path to test cases to be discoverable by typ.

Bug: 1122196
Change-Id: Ic66ac3ce36019cf5936a5bdbf8d908b36bd00de5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2443641Reviewed-by: Dirk Pranke <dpranke@google.com>
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: Anjali Doneria <adoneria@google.com>
Cr-Commit-Position: refs/heads/master@{#813238}

chrome/updater/run_updater_tests.py

@@ -12,7 +12,7 @@ import typ
 
 def main():
   return typ.main(
-      path=[path_finder.get_integration_tests_dir()],
+      tests=[path_finder.get_integration_tests_dir()],
   )