installed daemonsets do not tolerate a noschedule taint on control-plane nodes

[Adam Dyess]

Starting with 1.25 release, the control-plane charm has a taint which prevents scheduling of workloads to it.

Taints: node-role.kubernetes.io/control-plane:NoSchedule

The SRIOV charms should tolerate this taint and allow the sriov daemonsets to the control-plane nodes now that they've been renamed from master nodes.

[Adam Dyess (addyess)]

As a work-around, after deployment that daemonsets can be updated to include this toleration

The following daemonsets:

kube-sriov-cni-ds-amd64
kube-sriov-device-plugin-amd64
kube-sriov-device-plugin-arm64
kube-sriov-device-plugin-ppc64le

add this toleration:
      - effect: NoSchedule
        key: node-role.kubernetes.io/control-plane
        operator: Exists

[Adam Dyess (addyess)]

https://github.com/charmed-kubernetes/charm-sriov-network-device-plugin/pull/11
https://github.com/charmed-kubernetes/charm-sriov-cni/pull/19

[Adam Dyess (addyess)]

Backported change via cherry-pick