Pod Disruption Budget for CoreDNS

In order to improve the resilience of CoreDNS during upgrades, we have added a Pod Disruption Budget for the CoreDNS pods. The CoreDNS deployment already has a proper update strategy and anti affinity applied, however the extra PDB will prevent the posibility where there are no available CoreDNS pods running in the cluster during a rolling upgrade.

Istio upgraded to version 1.10.0

We have upgraded Istio on all clusters that use it. The version was upgraded from 1.9.2 to 1.10.0. The new version comes with some features meant for operators and no breaking changes that you should be aware of.

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