nvidia gpu count metrics and bugfix

[movence]

Description of changes

This PR includes 1 bug fix and and enhancement to add NVIDIA GPU count metrics including _limit, _request and _total at pod, node and cluster levels

• GPU count metrics
  • Add NVIDIA GPU count metric replication logic to metricstrasformprocessor translator
  • Update AWS EMF exporter metric declarations to include GPU count metrics with dimensions
• Bug fix
  • Fix the bug where the agent emits pod GPU metrics when there is no active workload

Related PR in contrib: amazon-contributing/opentelemetry-collector-contrib#214

License

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Tests

Tested with a cluster with 2 GPU (g4dn.12xlarge) instances with a workload which requires 2 GPU devices out of 8 total. As shown in the graph.

• Bug fix

  • Metrics showing wrong average pod_gpu_utilization of 25% when there is only 1 active workload using 2 GPU devices out of 8 total. This is because unused GPU devices still emit 0 utilization data.
    
  • Metrics showing 100% with the fix.
    

• GPU count metrics

Requirements

Before commit the code, please do the following steps.

1. Run make fmt and make fmt-sh
2. Run make lint

[Paramadon]

LGTM