* [calico] upgrade 3.19.x to 3.19.4

* [calico] upgrade 3.20.x to 3.20.4

* [calico] upgrade 3.21.x to 3.21.4 and make it the default

* [calico] add 3.22.0 checksums

* [calico] account for path changes in calico 3.21.4 crd archive and above

* Fix fedora jobs - followup

* Update OpenSUSE Leap to 15.3

* Fix cilium version in README + update minor 1.11.1

* Update kube-router to 1.4.0

* Update Helm to 3.7.2

* Up coredns to 1.8.6 when k8s is 1.23.x

* containerd: add hashes for 1.5.8 and 1.4.12 and make 1.5.8 the new default

* containerd: make nerdctl mandatory for container_manager = containerd

* nerdctl: bump to version 0.14.0

* containerd: use nerdctl for image manipulation

* OpenSuSE: install basic nerdctl dependencies

* Calico: Bump 3.20.x to 3.20.3

* Calico: Bump 3.18.x to 3.18.6

* Calico: add calico 3.21.1 hashes

* Add Fedora 35 image, support and CI

* Cleanup tests and allow_failure for vagrant

* nginx-ingress: bump to 1.0.4

* Disable builtin ssl_session_cache solving the problem with OpenSSL consuming memory.
* Print warning only instead of error if no IngressClass permission is available.

* nginx-ingress: bump to 1.0.4 in the README

* Add Rocky as a known OS

* Make sure Rocky includes bootstrap-centos.yml

* Update docs with Rocky Linux

* Rocky Linux wireguard and EPEL

* Rocky Linux in the list of supported distributions

* cert-manager: update to 1.5.4

* cert-manager: remove outdated guidelines on creating an initial ClusterIssuer

* make Calico 3.20.1 the default version
* drop Calico 3.17.x support