Add InstallPackages as not implemented for COS and CoreOS.
Add InstallPackages as not implemented for COS and CoreOS.

PiperOrigin-RevId: 324704285

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