* Add unit tests for aws-helper and minio-helper.
* Break up server.ts into app.ts and handlers/*.ts so that unit test can be written more easily.
* update @types/node because of https://github.com/microsoft/TypeScript/issues/32333
* upgrade kubernete-client version to be compatible with new @types/node version
* fix bug: AWSInstanceProfileCredentials.profile() returns a promise not a string
* remove I prefix from interfaces. minor fixes on lint errors.
* fix format errors
* Added more unit tests, and minor fixes.
* Fix comment: GKS should be GKE
* use jest.resetAllMocks instead of reset each mock individually
* fix format for helper test
Eterna2