[DONOT_MERGE] node-density-cni on 500 nodes

[venkataanil]

Below changes are required to run node-density-cni on 500+ nodes 1) requestTimeout is set to 60 sec to avoid Client.Timeout errors while checking for created objects 2) Better to use metrics-aggregated.yml instead of metrics.yml which will have reduced/aggregated metrics. kube-burner looks for metrics.yml file in current directory (or generates if not found) and uses that for metrics. This patch adds metrics.yml in the e2e workload directory which will have only required metrics. 3) At large scale (500 node+), prometheous is failing to scrape containerCPU-AggregatedWorkers, containerMemory-AggregatedWorkers, nodeCPU-AggregatedWorkers, nodeMemoryUtilization-AggregatedWorkers, podStatusCount and podDistribution. So removed them from the metrics.yml 4) we manually need to reduce node count after test is finished and run 'kube-burner index' to scrape containerCPU-AggregatedWorkers and containerMemory-AggregatedWorkers metrics if needed.

Type of change

• [ ] Refactor
• [ ] New feature
• [ ] Bug fix
• [ ] Optimization
• [ ] Documentation Update

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• [ ] I have performed a self-review of my code.
• [ ] If it is a core feature, I have added thorough tests.

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