cros_run_unit_tests: Include factory package unittests

grunt-paladin was previously running a unittest installed by the factory
package, and that unittest should be included in the unittest-only paladin
as well.

TEST=grunt-unittest-only-tryjob
BUG=None

Change-Id: If5c449f2aab5378ec0286b738314a91c772477be
Reviewed-on: https://chromium-review.googlesource.com/1399462
Commit-Ready: Chris McDonald <cjmcdonald@chromium.org>
Tested-by: Chris McDonald <cjmcdonald@chromium.org>
Reviewed-by: Jason Clinton <jclinton@chromium.org>
diff --git a/scripts/cros_run_unit_tests.py b/scripts/cros_run_unit_tests.py
index 4bc0f65..039afbb 100644
--- a/scripts/cros_run_unit_tests.py
+++ b/scripts/cros_run_unit_tests.py
@@ -22,7 +22,8 @@
 
 BOARD_VIRTUAL_PACKAGES = (constants.TARGET_OS_PKG,
                           constants.TARGET_OS_DEV_PKG,
-                          constants.TARGET_OS_TEST_PKG)
+                          constants.TARGET_OS_TEST_PKG,
+                          constants.TARGET_OS_FACTORY_PKG)
 IMPLICIT_TEST_DEPS = ('virtual/implicit-system',)