Blind fix of bug in 3fa6d69405f036308931dd36e5070b2b19dbeadf.

See, tests matter.

Change-Id: I8c42be90db246e3529eac9f62711ea5510db605d
Blind fix of bug in 3fa6d69405f036308931dd36e5070b2b19dbeadf.

See, tests matter.

Change-Id: I8c42be90db246e3529eac9f62711ea5510db605d
Add diskPack as a high level local storage destination

As a diskPack boolean flag in the high-level server config,
reusing the blobPath parameter for destination.

Change-Id: I9ec0583b160f89952cdad851e66c7fabf22b7bb4