MINOR: spoe: Improve generation of the engine-id

Use the same algo than the sample fetch uuid(). This one was added recently. So
it is better to use the same way to generate UUIDs.

This patch may be backported to older versions.

(cherry picked from commit 09bd9aa412d67cfd326b60ade1510f1d4c6344a9)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed