* Modify db_ledger to support per_slot metadata, add signal for updates, and add chaining to slots in db_ledger
* Modify replay stage to ask db_ledger for updates based on slots
* Add repair send/receive metrics
* Add repair service, remove old repair code
* Fix tmp_copy_ledger and setup for tests to account for multiple slots and tick limits within slots
* Modify replay stage to ask db_ledger for updates instead of reading from upstream channel
* Add signal for db_ledger to update listeners about updates
* fix flaky test
* Connect TPU's broadcast service with TVU's blob fetch stage
- This is needed since ledger is being written only in TVU now
* fix clippy warnings
* fix failing test
* fix broken tests
* fixed failing tests
* Use vote signer service in fullnode
* Use native types for signature and pubkey, and address other review comments
* Start local vote signer if a remote service address is not provided
* Rebased to master
* Fixes after rebase
* Also implement more storage contract logic
* Add transactions for proof validation,
* Move storage state members into system storage account userdata
* Remove logging init from storage program: saw a crash in a test
indicating the logger being init'ed twice.
* Add entry_height mining proof to indicate which segment the result is
for
* Add an interface to get storage miner pubkeys for a given entry_height
* Add an interface to get the current storage mining entry_height
* Set the tvu socket to 0.0.0.0:0 in replicator to stop getting entries
after the desired ledger segment is downloaded.
* Use signature of PoH height to determine which block to download for
replicator.
* Reduce args in Tvu::new under to 8
Now pass in sockets through a the crate::tvu::Sockets struct
Move ClusterInfo.keypair to pub(crate) in order to remove redundant
signing keypair parameter
* remove commented code
* Move more of the replicator logic into the replicator class
* Add support for the RPC interface to query the storage last_id value
that the replicator would sign and use to pick a block.
* Fix replicator connecting to gossip and change test to exercise that
scenario.
* Add db_window module for windowing functions from RocksDb
* Replace window with db_window functions in window_service
* Fix tests
* Make note of change in db_window
* Create RocksDb ledger in bin/fullnode
* Make db_ledger functions generic
* Add db_ledger to bin/replicator