The test "migrate a remote from named file in $GIT_DIR/branches" reads
the branches-file, but only checks that the url and fetch-refspec are
set correctly. Check that the push-refspec is also set correctly.
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>