Description of problem:

* Background of the issue -

We need to use perl script provided by AWS, Documented in KCS article [1] to get memory usage metrics of AWS instances, it is only supported on Linux Instances.

From the bugzilla (https://bugzilla.redhat.com/show_bug.cgi?id=1552288) we know that the VMDB collects mem_usage_absolute_average from AWS CloudWatch which then used to show memory graph in C&U data.

Memory graph is missing in C&U UI for AWS instances, Engineering is working on bugzilla (https://bugzilla.redhat.com/show_bug.cgi?id=1676761) to make it available.

* The issue -

There is a new CloudWatch Agent [2] introduced and recommended by AWS which supports metrics collection for Linux and Windows instances.

Memory Metric are captured with this new CloudWatch agent shows different name (mem_used_percent) and stored under "CWAgent". CFME does not capture this metric in VMDB.
Looks like the code is missing for this metric, here is the list [3] of metrics collected by new CloudWatch agent

[1] https://access.redhat.com/solutions/3948761
[2] https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Install-CloudWatch-Agent.html
[3] https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/metrics-collected-by-CloudWatch-agent.html

Version-Release number of selected component (if applicable):
5.9.4.7

How reproducible:
Always


Expected results:

It's requested by the customer to fully adopt the product in production.