CITA-CLOUD v6.2.0 release

本次版本更新对性能作了优化，controller 支持了批量发送交易，并且采用并行的方式检查交易签名，consensus_raft 优化了获取 proposal 的逻辑，cita_cloud_config 支持了 k8s 环境和 local 环境的配置产生。

修改详情

Controller

[Feature]

[feat] Support send_txs [@Pencil-Yao]

[Optimization]

[optim] Do check_transactions in parallel [@Pencil-Yao @whfuyn ]
[optim] rename main_chain_* [@Pencil-Yao ]

Consensus_raft

[BugFix]

[fix] fix raft messages lost [@whfuyn ]

[Optimization]

[optim] retry commit_block on failure [ @whfuyn ]
[optim] fix proposal log too long [ @whfuyn ]
[optim] get the next proposal after the previous one committed [ @whfuyn ]

cita_cloud_config

[Feature]

[feat] suport k8s & local mode [@Pencil-Yao ]

[BugFix]

[fix] modify network port in local env