Jail/chroot nginx process inside controller container (#8337)

* 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

rootfs/etc/nginx/nginx.conf

@@ -1,6 +1,8 @@
 # A very simple nginx configuration file that forces nginx to start.
-pid /tmp/nginx.pid;
+pid /tmp/nginx/nginx.pid;
+
+error_log stderr;
 
 events {}
 http {}
-daemon off;
+daemon off;