common.sh: add cros_rust_registry to INSTALL_MASK

/usr/lib/cros_rust_registry is similar to /usr/lib/gopath and should not
end up on an image.

BUG=chromium:1032360
TEST=with CL:2006951 cros_rust_registry dir doesn't end up on an image

Change-Id: I17995ab62bb14ec0ef4e51c6afa6c82451fc359f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2008479
Tested-by: Stephen Barber <smbarber@chromium.org>
Auto-Submit: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Commit-Queue: Stephen Barber <smbarber@chromium.org>
diff --git a/common.sh b/common.sh
index 36ed01a..8ac4f8c 100644
--- a/common.sh
+++ b/common.sh
@@ -404,6 +404,7 @@
   /usr/bin/Xnest
   /usr/bin/Xvfb
   /usr/include
+  /usr/lib/cros_rust_registry
   /usr/lib/debug
   /usr/lib/gopath
   /usr/lib*/pkgconfig