fix: Resolve the inconsistency between member configuration and log index in snapshot meta

[panlei-coder]

1、解决在真正生成快照时，snapshot meta 保存的成员配置信息和实际的快照数据不一致问题，可能导致新加入的节点跳过成员变更日志，出现配置信息不一致的问题。#9
2、修改 set_self_replay_point 接口为 set_last_applied_index_and_term。

Summary by CodeRabbit

• New Features

  • Introduced a method to retrieve configuration entries by index, enhancing configuration management.
  • Updated snapshot generation to include configuration details, improving metadata integrity.

• Bug Fixes

  • Enhanced error handling and logging for snapshot operations to ensure accurate state representation.

• Style

  • Minor formatting adjustments in the parser methods for improved readability.
  • Updated configuration settings for external project dependencies to a more stable version.

[coderabbitai]

Walkthrough

The changes introduce a new method GetConfigurationByIndex in the PRaft class to retrieve configuration entries based on an index. Modifications to the on_snapshot_load method adjust how the node's state initializes during snapshot loading. Additionally, the PPosixFileSystemAdaptor::open method is enhanced to update snapshot metadata with configuration details, ensuring accurate representation of the system's state. The overall control flow and error handling remain consistent across the affected files.

Changes

File	Change Summary
src/praft/praft.cc	Added method GetConfigurationByIndex for retrieving configuration entries; modified on_snapshot_load to set last applied index and term.
src/praft/praft.h	Declared GetConfigurationByIndex method; added include directive for "braft/configuration_manager.h".
src/praft/psnapshot.cc	Enhanced PPosixFileSystemAdaptor::open to update snapshot metadata with configuration entries; introduced variables for storing configuration details.
src/proto_parser.cc	Minor formatting adjustments in Reset and parseStrval methods for improved readability.
cmake/braft.cmake	Updated GIT_TAG from v1.1.2-alpha2 to v1.1.2.1 and modified URL_HASH to reflect the new version.

Poem

In the garden of code, where changes bloom,
A method was added, dispelling the gloom.
Snapshots now tell of the state with great care,
With configurations clear, and no need to despair.
Hopping through logic, like a rabbit so spry,
We celebrate changes, oh my, oh my! 🐇✨

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Reviewing files that changed from the base of the PR and between f8063ad and 1c9e6bb.

📒 Files selected for processing (1)

• cmake/braft.cmake (1 hunks)

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[panlei-coder]

@hotjump @dingxiaoshuai123

[luky116]

看了下 BRAFT 中没有这个方法