util/board_status: Fetch and rebase after failed push

Currently, when the remote master branch of the board-status
repository changes between cloning and pushing, `git push origin`
fails.

This race condition happens quite often with REACTS testing commits at
the same time on different systems.

If that happens, just download the objects and refs from the
board-status repository and rebase the local changes on it. Try that
three times before exiting with an error message.

Change-Id: I628ebce54895f44be6232b622d56acbcc421b847
Helped-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Helped-by: Patrick Georgi <pgeorgi@google.com>
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/10262
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
1 file changed