vboot: enable futility tests by default

Since CL:2039946, flakiness with test_update.sh should be fixed.
Thus, we should enable futility tests.

BUG=b:124141368, chromium:605348
TEST=make clean && make runtests
TEST=attempt running on CQ
BRANCH=none

Change-Id: Ie97ca89fa9e4c792363c2a9cd467d8cbe7f373d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2043023
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Julius Werner <jwerner@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
diff --git a/Makefile b/Makefile
index 6942694..eae7a57 100644
--- a/Makefile
+++ b/Makefile
@@ -1308,10 +1308,8 @@
 .PHONY: rununittests
 rununittests: runcgpttests runmisctests run2tests
 
-# chromium(1048048): Not including runfutiltests due to flakiness.
-# Add back when this issue has been resolved.
 .PHONY: runtests
-runtests: rununittests runtestscripts
+runtests: rununittests runtestscripts runfutiltests
 
 # Code coverage
 .PHONY: coverage_init