Add volumeattach/volumedetach API #2645

Job	Run time
packages (arm64-secure, arm64)	27m 1s
packages (ubuntu-20.04, amd64)	12m 32s
packages (ubuntu-latest, riscv64)	33m 6s
manifest	2m 44s
eve (arm64, kvm)	34m 13s
eve (arm64, xen)	35m 55s
eve (amd64, kvm)	33m 17s
eve (amd64, xen)	32m 41s
eve (riscv64, mini)	2m 39s
trigger_assets	0s
	3h 34m 8s

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