The maintainer of the xmlsec1 package has moved the source .tar.gz for
version 1.2.25 to a "old" directory, so add a bbappend to tweak the
recipe SRC_URI.
Bug-AGL: SPEC-2601
Change-Id: Ife33daad6d5a6e83567ef5e417a17bf35d82d79a Signed-off-by: Scott Murray <scott.murray@konsulko.com>