GoFrame Release v2.1.0-rc4

What's Changed

• [ISSUE #1866] Fix/polaris logs dir and docker image by @houseme in #1867
• Feature/gsvc interface by @gqcn in #1871
• upgrade ClickHouse dependencies to V2 by @DGuang21 in #1772
• Fix/1748 issues #1748 by @houseme in #1817
• Improve the code coverage of the gtcp module by @huangqian1985 in #1836
• Feature/oracle by @wenzi1 in #1869

Full Changelog: v2.1.0-rc3...v2.1.0-rc4