Incorrect metric names in ResourceUtilizationInstruments

[evgenyfedorov2]

Metric names in ResourceUtilizationInstruments have incorrect keys https://github.com/dotnet/extensions/blob/10681a1cdb1e044b05341150203b94d5eec41557/src/Libraries/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceUtilizationInstruments.cs

1. public const string CpuUtilization = "process.cpu.utilization"; - in reality, the CPU utilization is measured for all processes in a container, not only for current.
2. public const string MemoryUtilization = "dotnet.process.memory.virtual.utilization";- in reality, the Memory utilization is measured for all processes in a container, not only for current dotnet process.