Removes most instances of pb.SignedMessage (there's more to take out but they shouldn't hurt anyone as is).
There used to be places in psserver where a PieceID was hmac'd with the SatelliteID, which was gotten from a SignedMessage. This PR makes it so some functions access the SatelliteID from the Payer Bandwidth Allocation instead.
This requires passing a SatelliteID into psserver functions where they weren't before, so the following proto messages have been changed:
* PieceId - satellite_id field added
This is so the psserver.Piece function has access to the SatelliteID when it needs to get the namespaced pieceID.
This proto message should probably be renamed to PieceRequest, or a new PieceRequest message should be created so this isn't misnamed.
* PieceDelete - satellite_id field added
This is so the psserver.Delete function has access to the SatelliteID when receiving a request to Delete.
* storage node quick check and startup validation
* rearranged the startup validation and quick check logic
* travis lint warning fixes
* travis lint warning fixes
* travis lint warning fixes
* code changes per review comments
* code clean dev debug info
* travis lint wranings
* code changes per code review comments
* code changes per code review comments
* code update per review
* sqlite SUM is having issue when getting the SUM of an empty column; filepath was checking a directory that doesn't exist when starting server; Example updated to print allocated and used space
* storage node quick check and startup validation
* rearranged the startup validation and quick check logic
* travis lint warning fixes
* travis lint warning fixes
* travis lint warning fixes
* code changes per review comments
* code clean dev debug info
* travis lint wranings
* code changes per code review comments
* code changes per code review comments
* code update per review
* no file or directory error
* Updated mock PSClient
* captplanet standalone farmer setup
* Bandwidth Allocation
* utils.Close method changed to utils.LogClose
* Get build temporarily working
* Get/Put for PSClient should take payer bandwidth allocations rather than the NewPSClient function
* Update example client to reflect changes in client API
* Update ecclient to use latest PSClient, Make NewPSClient return error also
* Updated pieceranger tests to check for errors; sign method should take byte array
* Handle defers in store.go better
* Fix defer functions in psdb.go
* fun times
* Protobuf bandwidthallocation data is now a byte array
* Remove psservice package and merge it into pstore server
* Write wrapper for database calls
* Change all expiration names in protobuf to be more informative; add defer in retrieve; remove old comment
* Make PSDB tests implementation independent rather than method independent
* get rid of payer, renter in ecclient
* add context monitoring in store and retrieve
