Add cargo-generated Cargo.lock comment block

Cargo 1.34.0 insists on adding a header comment to Cargo.lock on each
invocation to indicate that the file is not meant to be edited by hand.
Add the header to our checked-in copy of Cargo.lock so it doesn't
continually dirty the working copy.

BUG=None
TEST=cargo build; verify Cargo.lock is unchanged

Change-Id: I7f7559433d0fdad8a18253ac4f17475f040b3068
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1569288
Reviewed-by: Ned Nguyen <nednguyen@google.com>
1 file changed