Add the storage mocks, which somehow also went missing.
Add the storage mocks, which somehow also went missing.

gdbelvin/trillian,Martin2112/trillian,daviddrysdale/trillian,Martin2112/trillian,AlCutter/trillian,daviddrysdale/trillian,AlCutter/trillian,RJPercival/trillian,gtank/trillian,google/trillian,gdbelvin/trillian,gtank/trillian,google/trillian,gdbelvin/trillian,codingllama/trillian,codingllama/trillian,Martin2112/trillian,RJPercival/trillian,daviddrysdale/trillian