fix: fix bugs caused by 1.5

Ftr/self discovery

Ftr:  Add an "api way" to set general configure

Fix/graceful shutdown

Ftr: registry ip:port set from enviroment variable

Format go.mod for Goland

Bump actions/cache from v2 to v2.1.4

Merge pull request #1048 from apache/dependabot/go_modules/develop/github.com/nacos-group/nacos-sdk-go-1.0.6

Bump github.com/nacos-group/nacos-sdk-go from 1.0.5 to 1.0.6

Imp: destroy invoker smoothly

Rft: remove trailing whitespace

docs: fix grammar and fix links

Ready for release 1.5.6

This reverts commit ce6b8288.

Bumps [github.com/nacos-group/nacos-sdk-go](https://github.com/nacos-group/nacos-sdk-go) from 1.0.5 to 1.0.6.
- [Release notes](https://github.com/nacos-group/nacos-sdk-go/releases)
- [Commits](https://github.com/nacos-group/nacos-sdk-go/compare/v1.0.5...v1.0.6

)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [actions/cache](https://github.com/actions/cache) from v2 to v2.1.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2...26968a09c0ea4f3e233fdddbafd1166051a095f6

)

Signed-off-by: dependabot[bot] <support@github.com>

Fix can't run rest protocol sample