Summary:
This is mostly taken from https://github.com/facebook/rocksdb/issues/10427 with my own comments addressed. This PR plumbs the user’s `ReadOptions` down to `GetOrReadIndexBlock()`, `GetOrReadFilterBlock()`, and `GetFilterPartitionBlock()`. Now those functions no longer have to make up a `ReadOptions` with incomplete information.

I also let `PartitionIndexReader::NewIterator()` pass through its caller's `ReadOptions::verify_checksums`, which was inexplicably dropped previously.

Fixes https://github.com/facebook/rocksdb/issues/10463

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11208

Test Plan:
Functional:
- Measured `-verify_checksum=false` applies to metadata blocks read outside of table open
  - setup command: `TEST_TMPDIR=/tmp/100M-DB/ ./db_bench -benchmarks=filluniquerandom,waitforcompaction -write_buffer_size=1048576 -target_file_size_base=1048576 -max_bytes_for_level_base=4194304 -compression_type=none -num=1638400 -key_size=8 -value_size=56`
  - run command: `TEST_TMPDIR=/tmp/100M-DB/ ./db_bench -benchmarks=readrandom -use_existing_db=true -write_buffer_size=1048576 -target_file_size_base=1048576 -max_bytes_for_level_base=4194304 -compression_type=none -num=1638400 -key_size=8 -value_size=56 -duration=10 -threads=32 -cache_size=131072 -statistics=true -verify_checksum=false -open_files=20 -cache_index_and_filter_blocks=true`
  - before: `rocksdb.block.checksum.compute.count COUNT : 384353`
  - after: `rocksdb.block.checksum.compute.count COUNT : 22`

Performance:
- Setup command (tmpfs, 128MB logical data size, cache indexes/filters without pinning so index/filter lookups go through table reader): `TEST_TMPDIR=/dev/shm/128M-DB/ ./db_bench -benchmarks=filluniquerandom,waitforcompaction -write_buffer_size=131072 -target_file_size_base=131072 -max_bytes_for_level_base=524288 -compression_type=none -num=4194304 -key_size=8 -value_size=24 -bloom_bits=8 -whole_key_filtering=1`
- Measured point lookup performance. Database is fully cached to emphasize any new callstack overheads
  - Command: `TEST_TMPDIR=/dev/shm/128M-DB/ ./db_bench -benchmarks=readrandom[-W1][-X20] -use_existing_db=true -cache_index_and_filter_blocks=true -disable_auto_compactions=true -num=4194304 -key_size=8 -value_size=24 -bloom_bits=8 -whole_key_filtering=1 -duration=10 -cache_size=1048576000`
  - Before: `readrandom [AVG    20 runs] : 274848 (± 3717) ops/sec;    8.4 (± 0.1) MB/sec`
  - After: `readrandom [AVG    20 runs] : 277904 (± 4474) ops/sec;    8.5 (± 0.1) MB/sec`

Reviewed By: hx235

Differential Revision: D43145366

Pulled By: ajkr

fbshipit-source-id: 75ec062ece86a82cd788783de9de2c72df57f994