* 4.20:
linstor: Fix ZFS snapshot backup (#10219)
fix listing of VMs by network (#10204)
Configure org.eclipse.jetty.server.Request.maxFormKeys from server.properties and increase the default value (#10214)
api: fix access for listSystemVmUsageHistory (#10032)
Fix NPE issues during host rolling maintenance, due to host tags and custom constrained/unconstrained service offering (#9844)
81e052cfeb