[Feature-312][alert] Add FeiShu alert type [Feature-309][alert] Add Email alert type [Feature-339][admin,web] Add alarm msg sending test [Feature][root] Add docker support [Feature-355][admin,executor] Restore the job from a savepoint path in remote mode [Feature-377][] Modify version to 0.6.2-SNAPSHOT [Feature-389][client,executor] Add OracleCDCSourceMerge [Feature-401][] Modify version to 0.6.2

[Fix-239][core] Use "==" to judge whether the values of referenced variables are equal. Replace with the equals function [Fix-310][gateway] Configure hadoop_conf for Flink [Fix-347][alert] Fix to the latest configuration take effect during the alert test [fix-350][alert] Feishu alert when choose '@all' send msg failed bug [Fix-358][pom] Fix to install [fix-363][metadata-hive] Fix hive getSqlGeneration Exception [Fix-370][executor] Avoid replacement failure due to special characters [Fix-98][admin,web] Fix to show exception [Fix-127][core,executor] Add executeAsync datastream job [Fix-352][admin] Fix to modify cluster configuration [Fix-395][connector] Oracle connector oracle.sql.TIMESTAMP converte java.sql.Timestamp occur cast exception [Fix-402][admin] MybatisPlus PO boolean default false [fix-407][common,function] Use "==" to judge whether the values of referenced variables are equal. [Fix-405][common] Fix the default value of SystemConfiguration sqlSeparator to ';\r\n' [Fix-393][core] Program in loop when offline task failed [Fix-418][admin,core,sql] Fix submit task parameter exception

[Optimization-367][core] Optimization explainSql return all error [Optimization-371][metadata-hive] Optimization metadata-hive pom [Optimization-373][admin] Add httpclient to admin jar [Optimization-382][alert,metadata] Optimization SPI [Optimization-384][client] Optimization CDCSourceMerge [Optimization-397][daemon] SPI Optimization [Optimization-406][web] FlinkWebUI button Optimization && add flinkwebui button for clusertInstance Manager