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

test/e2e-image/namespace-overlays/admission/values.yaml

@@ -3,6 +3,7 @@ fullnameOverride: nginx-ingress
 controller:
   image:
     repository: ingress-controller/controller
+    chroot: true
     tag: 1.0.0-dev
     digest:
   containerPort:

test/e2e-image/namespace-overlays/custom-health-check-path/values.yaml

@@ -3,6 +3,7 @@ fullnameOverride: nginx-ingress
 controller:
   image:
     repository: ingress-controller/controller
+    chroot: true
     tag: 1.0.0-dev
     digest:
   extraArgs:

test/e2e-image/namespace-overlays/forwarded-port-headers/values.yaml

@@ -3,6 +3,7 @@ fullnameOverride: nginx-ingress
 controller:
   image:
     repository: ingress-controller/controller
+    chroot: true
     tag: 1.0.0-dev
     digest:
   containerPort:

test/e2e-image/namespace-overlays/namespace-selector/values.yaml

@@ -3,6 +3,7 @@ fullnameOverride: nginx-ingress
 controller:
   image:
     repository: ingress-controller/controller
+    chroot: true
     tag: 1.0.0-dev
     digest:
   containerPort: