Add toolbox as an exception for license check

BUG=b/221096364
TEST=manual
RELEASE_NOTES=None

Change-Id: I650b1e34263a04fbc399fca6f2d471a29c893f95
Reviewed-on: https://cos-review.googlesource.com/c/cos/repohooks/+/29726
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Rayan Dasoriya <dasoriya@google.com>

pre-upload.py

diff --git a/pre-upload.py b/pre-upload.py
index 229b718..cf67632 100755
--- a/pre-upload.py
+++ b/pre-upload.py
@@ -108,6 +108,7 @@
     r'^(.*/)?OWNERS(\..*)?$',
     r'^(.*/)?README(\..*)?$',
     r'^(.*/)?LICENSE(\..*)?$',
+    r'^(.*/)?toolbox$',
 ]
 
 _CONFIG_FILE = 'PRESUBMIT.cfg'
@@ -796,7 +797,8 @@
            'cos-patch: security-critical\n'
            'cos-patch: bug\n'
            'cos-patch: lts-refresh\n'
-           'For valid values, please check go/cos-lts-policy-dev-guide#commit-message-tagging.')
+           'For valid values, please check \
+            go/cos-lts-policy-dev-guide#commit-message-tagging.')
     return HookFailure(msg)
 
   # Check that 'cos-patch' is in the same paragraph as Change-Id.