* Handle cleaning zero-lamport accounts
Handle cleaning zero-lamport accounts in slots higher than the last full
snapshot slot. This is part of the Incremental Snapshot work.
Fixes#18825
1. Added both options for measuring space usage using total accounts usage and for individual store shrink ratio using an enum. Validator CLI options: --accounts-shrink-optimize-total-space and --accounts-shrink-ratio
2. Added code for selecting candidates based on total usage in a separate function select_candidates_by_total_usage
3. Added unit tests for the new functions added
4. The default implementations is kept at 0.8 shrink ratio with --accounts-shrink-optimize-total-space set to true
Fixes#17544
* cleanup if
* pass expected capitalization to hash calculation to improve assert message
* fix bank function
* one more level
* calculate_accounts_hash_helper
* add slot to error message
* success
* Simpler cap by including sysvars and native programs
* Fix tests
* Add comment
* revert some unrelated code
* Update test_bank_update_sysvar_account for cap.
* Test cap. for add_native_program using new helper
* Improve the cap adjustment with new tests
* Fix typo...
* Adjust test for improved code coverage
* Rename simpler_capitalization => simple_capitalization
* More rename and bonus commenting
* Check bank capitalization
* Simplify and unify capitalization calculation
* Improve and add tests
* Avoid overflow and inhibit automatic restart
* Fix test
* Tweak checked sum for cap. and add tests
* Fix broken build after merge conflicts..
* Rename to ClusterType
* Rename confusing method
* Clarify comment
* Verify cap. in rent and inflation tests
Co-authored-by: Stephen Akridge <sakridge@gmail.com>
