Use consistent log file names, introduced initLogger (#3403)
### What problem does this PR solve?
Use consistent log file names, introduced initLogger
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):
* add field progress msg into docinfo; add file processing procedure
* go through upload, create kb, add doc to kb
* smoke test for all API
* smoke test for all API