Improve observability of EKS-A

[jiayiwang7]

Metrics

• [x] https://github.com/aws/eks-anywhere/issues/4405
• [ ] https://github.com/aws/eks-anywhere/issues/4299
• [ ] https://github.com/aws/eks-anywhere/issues/5216

Logs

• https://github.com/aws/eks-anywhere/issues/5143
• https://github.com/aws/eks-anywhere/issues/4860
• https://github.com/aws/eks-anywhere/issues/4834
• https://github.com/aws/eks-anywhere/issues/4858
• https://github.com/aws/eks-anywhere/issues/5103

Troubleshooting

• NA

[Cajga]

This could be also part of it: https://github.com/aws/eks-anywhere/issues/7106