Move deltaten upgrade script to the adequate folder.

Signed-off-by: Raphaël Barrois <raphael.barrois@polytechnique.org>

diff --git a/upgrade/1.1.0/10_deltaten.sql b/upgrade/1.1.1/15_deltaten.sql
similarity index 100%
rename from upgrade/1.1.0/10_deltaten.sql
rename to upgrade/1.1.1/15_deltaten.sql