[Telemetry] Don't fail powermetrics unit tests when run on a VM.

tools/telemetry/telemetry/core/platform/power_monitor/powermetrics_power_monitor.py

Index: tools/telemetry/telemetry/core/platform/power_monitor/powermetrics_power_monitor.py
diff --git a/tools/telemetry/telemetry/core/platform/power_monitor/powermetrics_power_monitor.py b/tools/telemetry/telemetry/core/platform/power_monitor/powermetrics_power_monitor.py
index abb6fe9eebf3809ba827b562a2c613061243a2bb..b95ab260205d489d903cdfcc456f641c0e586144 100644
--- a/tools/telemetry/telemetry/core/platform/power_monitor/powermetrics_power_monitor.py
+++ b/tools/telemetry/telemetry/core/platform/power_monitor/powermetrics_power_monitor.py
@@ -140,6 +140,11 @@ class PowerMetricsPowerMonitor(power_monitor.PowerMonitor):
                       '%d', len(powermetrics_output))
       return {}
 
+    # Powermetrics doesn't record power usage when running on a VM.
+    hw_model = plist.get('hw_model')
+    if hw_model and hw_model.startswith('VMware'):
+      return {}
+
     if 'GPU' in plist:
       metrics.extend([
           ConstructMetric(