Move and rename ledger services from core to ledger

[steviez]

Problem

These services currently live in core/; however, they operate on the ledger. Mores so, these two services operate on the blockstore only, and not necessarily the entire ledger. So, it makes sense to move these services out of core and into ledger. We've recently been doing similar changes with breaking things out into individual crates in order to reduce the scope of core.

Summary of Changes

• Move services from core to ledger
• Rename services from ledger_* to blockstore_*

This PR deletes two tests:

• The one from local cluster exercises behavior that can be tested in isolation on a "single" node, and is already done so in blockstore_purge.rs
• The one from core/tests/ was previously used as a way to benchmark shred insertion speed. However, with the introduction of merkle shreds, the method of just updating slots in the shreds in no longer valid. The result is that shreds need to be regenerated on the fly; shred regeneration on the fly is the limiter in this bench so the whole thing is somewhat useless. If we wish to bench this, the best approach would be to have a full blockstore and stream shreds from one to another, new blockstore. This approach is fundamentally different enough that I think rewriting the test from scratch would be better than trying to adapt the old test. The old test has been around long enough that is has been band-aided several times, and I have previously discussed just removing it with YH

[codecov]

Codecov Report

Merging #33947 (a44ad6d) into master (b8115b4) will increase coverage by 0.0%.
Report is 2 commits behind head on master.
The diff coverage is 85.1%.

@@           Coverage Diff           @@
##           master   #33947   +/-   ##
=======================================
  Coverage    81.9%    81.9%           
=======================================
  Files         811      811           
  Lines      219354   219354           
=======================================
+ Hits       179699   179724   +25     
+ Misses      39655    39630   -25     

[CriesofCarrots]

This works for me.
Incidentally, I wonder if solana-ledger itself could use some slimming at some point. Beyond blockstore definitions and utilities, it's become the landing place for any "stuff we need in replay"

[steviez]

This works for me. Incidentally, I wonder if solana-ledger itself could use some slimming at some point. Beyond blockstore definitions and utilities, it's become the landing place for any "stuff we need in replay"

That's a good point; the replay stuff is only a couple files (mostly blockstore_processor.rs) so I agree that they could seemingly be broken into their own crate. Going to hold off on doing anything at the moment; I know some people are working on overhauling the scheduler. There will likely be some shuffling there, and it doesn't seem out of the realm of possibility that a new home for replay stuff would appear from that