Suppress checks for files in overlay profiles

I was getting warnings like these upon repo upload:
  Found a bad license header in these files:
      * /usr/local/google/home/dianders/chromiumos/src/overlays/overlay-waluigi/profiles/base/parent
      * /usr/local/google/home/dianders/chromiumos/src/overlays/overlay-waluigi/profiles/base/virtuals
      * /usr/local/google/home/dianders/chromiumos/src/overlays/overlay-waluigi/profiles/kernel-next/parent
      * /usr/local/google/home/dianders/chromiumos/src/overlays/overlay-waluigi/profiles/kernel-next/virtuals

BUG=None
TEST=No longer get warnings mentioned above upon repo upload.

Change-Id: I94076141ad08079f6a309e9260c280b9afd5148c
Reviewed-on: https://gerrit.chromium.org/gerrit/10686
Tested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Ryan Cui <rcui@chromium.org>
Commit-Ready: Doug Anderson <dianders@chromium.org>
diff --git a/pre-upload.py b/pre-upload.py
index 4a647cd..77ea6fe 100644
--- a/pre-upload.py
+++ b/pre-upload.py
@@ -39,6 +39,9 @@
   # for ebuild trees, ignore any caches and manifest data
   r".*/Manifest$",
   r".*/metadata/[^/]*cache[^/]*/[^/]+/[^/]+$",
+
+  # ignore profiles data (like overlay-tegra2/profiles)
+  r".*/overlay-.*/profiles/.*",
 ]