[NFS-Ganesha-Support] upgrades in HA configuration

I understand that Genesha supports HA configurations. Software upgrades are a lot more frequent than hardware failures. The ability to do upgrades is actually more of a motivation for HA than handling failures. Do you support rolling upgrades, i.e. upgrading one node while the other is active? That would require that the two nodes would end up with different versions for at least some period of time.