The tests were using global variables for keeping the mock state, which
was indexed by the satellite ID. However, the satellite ID-s are
deterministic and it's possible for two tests end up using the same
mocks.
Instead make the mock creation not depend on the satellite ID and
instead require it being configured via paymentsconfig.
This fixes TestAutoFreezeChore failure.
Change-Id: I531d3550a934fbb36cff2973be96fd43b7edc44a