devcam: print out temp dir on start-up

Change-Id: I7f84ffdecc5cb63baa931d5b5de8aca564970a67
dev-server-config: no longer need to replicate to a sync. the sync subscribes to its source.

Change-Id: I7734f47f039cbdd40fcb672ba60d6a2488b42bdc
blobserver: run blobhub receive hooks in parallel.

Change-Id: I918a124a01a2d75a64c26e136d28ed7f2547509d
Remove dependency on the testing package from pkg/index. Polluted flags.

Change-Id: Id5492fcab022c03e40501830d9253b5605a14ee6