Don't record resolutions in tests

Disabling this stifles annoying messages displayed during tests about
resolution, e.g.

    Recorded preimage for 'some-file'

Disabling this makes the tests less noisy.

Change-Id: Ib3d4c7d343d1323f21641fdd182eb46c692ba68b
Reviewed-on: http://gerrit.causes.com/45269
Tested-by: jenkins <jenkins@brigade.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>