* initial commit
* promote AWS-NLB Support from alpha to beta (#14451) (#16459) (#16484)
* 1. Sync release-1.15 into master
2. Sync with en version
* 1. Add the lost yaml file.
* Update he cluster administration folder of concepts
1. Sync with 1.14 branch
2. Sync with en version
* Add yaml files which are used
* 1. Sync the configuration folder from 1.14 version
2. Sync the configuration folder files with en version
3. Changed some files structure for easily review
4. Add glossary folder for fixup build error
648baf13ad