cleanup units for upgrade kube-jobs and policies

This MR does cleanups on units that were used for previous Sylva upgrades but that aren't relevant any longer:

• cluster-node-deletion-timeout-fix was used to set the CAPI nodeDeletionTimeout prior to the upgrade to Sylva 1.1, not needed anymore now that sylva-capi-cluster sets it
• calico-rke2-chart-cleanup was used to delete the RKE2 HelmChart for calico prior to the upgrade to Sylva 1.3; not needed anymore since today's design is that this chart is used on installation of first node and removed right after (by cloud-init commands)
• cluster-prevent-rke2-helmcharts-calico-metallb this unit was installing a Kyverno policy to tweak RKE2 HelmChart objects to avoid rare occurences where the RKE2 HelmChart controller would uninstall these charts; this isn't relevant to keep now that Flux is used to handle Calico and MetalLB (the only moment where those RKE2 HelmChart resources are used is on installation of first node, which is short, and anyways it's not a moment where we could have this policy installed as a safe-guard)

CI configuration

Below you can choose test deployment variants to run in this MR's CI.

Click to open to CI configuration

Legend:

Icon	Meaning	Available values
☁️	Infra Provider	capd, capo, capm3
🚀	Bootstrap Provider	kubeadm (alias kadm), rke2
🐧	Node OS	ubuntu, suse
🛠️	Deployment Options	light-deploy, oci, ha, misc
🎬	Pipeline Scenarios	no-wkld simple-update simple-update-no-wkld rolling-update rolling-update-no-wkld wkld-k8s-upgrade nightly sylva-upgrade sylva-upgrade-no-wkld sylva-upgrade-from-x.x.x preview

• 🎬 preview ☁️ capd 🚀 kadm 🐧 ubuntu 🛠️ oci

• 🎬 preview ☁️ capo 🚀 rke2 🐧 suse

• 🎬 preview ☁️ capm3 🚀 rke2 🐧 ubuntu

• ☁️ capd 🚀 kadm 🛠️ light-deploy 🐧 ubuntu

• ☁️ capd 🚀 rke2 🛠️ oci,light-deploy 🐧 suse

• ☁️ capo 🚀 rke2 🛠️ oci 🐧 suse

• ☁️ capo 🚀 kadm 🛠️ oci 🐧 ubuntu

• ☁️ capo 🚀 rke2 🎬 rolling-update 🛠️ ha 🐧 ubuntu

• ☁️ capo 🚀 kadm 🎬 wkld-k8s-upgrade 🐧 ubuntu

• ☁️ capo 🚀 rke2 🎬 rolling-update-no-wkld 🛠️ ha,misc 🐧 suse

• ☁️ capo 🚀 rke2 🎬 sylva-upgrade-from-1.3.x 🛠️ ha 🐧 ubuntu

• ☁️ capm3 🚀 rke2 🐧 suse

• ☁️ capm3 🚀 kadm 🛠️ oci 🐧 ubuntu

• ☁️ capm3 🚀 kadm 🎬 rolling-update-no-wkld 🛠️ ha,misc 🐧 ubuntu

• ☁️ capm3 🚀 rke2 🎬 wkld-k8s-upgrade 🛠️ ha 🐧 suse

• ☁️ capm3 🚀 kadm 🎬 rolling-update 🛠️ ha 🐧 ubuntu

• ☁️ capm3 🚀 rke2 🎬 sylva-upgrade-from-1.3.x 🛠️ ha 🐧 suse

• ☁️ capm3 🚀 kadm 🎬 rolling-update 🛠️ ha 🐧 suse

Global config for deployment pipelines

• autorun pipelines
• allow failure on pipelines

Notes:

• Enabling autorun will make deployment pipelines to be run automatically without human interaction
• Disabling allow failure will make deployment pipelines mandatory for pipeline success.
• if both autorun and allow failure are disabled, deployment pipelines will need manual triggering but will be blocking the pipeline

Be aware: after configuration change, pipeline is not triggered automatically. Please run it manually (by clicking the run pipeline button in Pipelines tab) or push new code.