Don't create an NFS service if there are no VMs to create one for
Don't create an NFS service if there are no VMs to create one for

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=214337530

GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker