Add Support for Persistent OVMF Settings in Pillar #8617

Job	Run time
packages (buildjet-4vcpu-ubuntu-2204-arm, arm64)	20m 56s
packages (buildjet-4vcpu-ubuntu-2004, amd64)	12m 35s
packages (buildjet-4vcpu-ubuntu-2004, riscv64)	4m 41s
eve (arm64, xen, generic)	6m 24s
eve (arm64, kvm, generic)	6m 14s
eve (amd64, xen, generic)	6m 26s
eve (amd64, kvm, generic)	5m 50s
eve (riscv64, mini, generic)	4m 25s
eve (amd64, kvm, rt)	5m 20s
eve (arm64, kvm, nvidia)	8m 11s
eve (arm64, kvm, imx8mp_pollux)	6m 42s
eve (arm64, kvm, imx8mp_epc_r3720)	6m 37s
	1h 34m 21s

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