* Initial work on chrooting nginx process
* More improvements in chroot
* Fix charts and some file locations
* Fix symlink on non chrooted container
* fix psp test
* Add e2e tests to chroot image
* Fix logger
* Add internal logger in controller
* Fix overlay for chrooted tests
* Fix tests
* fix boilerplates
* Fix unittest to point to the right pid
* Fix PR review
* Rewrite clean-nginx-conf.sh to speed up admission webhook
* Less diff with original clean-nginx-conf.sh
* Add error handling, add documentation, add unit test
* indent code
* Don't ignore Getwd() error