Bug 22808: Move Cache.t to db_dependent

Bug 22808: Move Cache.t to db_dependent

Cache.t fails during package build. Moving it to db_dependent fixes
the problem.

Signed-off-by: Liz Rea <wizzyrea@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 6509d73d7925fe5d317d6f2baa1d1565d8d36220)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 3653df7715744f583bd33c62775d2ec8f7753b0a)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>