GitLab

* Improve docs

* All using # to start

* uploaded -> excluded

* Set versionCheck default to true

* Add .nniignore example

* Rename training service docs

* Update training service docs

* Fix step numbering

* Resolve comments

* Fix typo

* Resolve comments

* Fix broken link

others

1. fix failed curve fitting UTs, due to code changes.
1. move all SDK UTs to tests folder, so that they can be run in default tests.
1. fix some deprecated ut assert function calls.

* skeleton of dlts training service (#1844)

* Hello, DLTS!

* Revert version

* Remove fs-extra

* Add some default cluster config

* schema

* fix

* Optional cluster (default to `.default`)

Depends on DLWorkspace#837

* fix

* fix

* optimize gpu type

* No more copy

* Format

* Code clean up

* Issue fix

* Add optional fields in config

* Issue fix

* Lint

* Lint

* Validate email, password and team

* Doc

* Doc fix

* Set TMPDIR

* Use metadata instead of gpu_capacity

* Cancel paused DLTS job

* workaround lint rules

* pylint

* doc
Co-authored-by: QuanluZhang <z.quanluzhang@gmail.com>