EKSA Curated Packages : Alert Manager for Prometheus

[saiteja313]

What would you like to be added:

As an Admin for EKSA Cluster, I want to monitor the health of critical components on cluster like health metrics, certificate expiry date metric and route alerts to pager duty or e-mail.

https://github.com/prometheus/alertmanager

Why is this needed:

• Monitoring and Alerting for Production cluster deployment use case