vmm: add task config to cloud hypervisor #519

Job	Run time
tests (vmm/sandbox, --all-features)	6m 52s
checks (vmm/sandbox, --all-features)	8m 17s
tests (vmm/task, --all-features)	5m 2s
checks (vmm/task, --all-features)	7m 33s
tests (shim, --all-features)	3m 56s
checks (shim, --all-features)	7m 30s
tests (quark, --all-features)	4m 46s
checks (quark, --all-features)	7m 26s
tests (wasm, --features=wasmedge, 0.11.2)	6m 20s
checks (wasm, --features=wasmedge, 0.11.2)	7m 35s
tests (wasm, --features=wasmtime)	5m 25s
checks (wasm, --features=wasmtime)	10m 36s
	1h 21m 18s

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