Kubernetes Power Manager v2.3.1 release

[madalazar]

Kubernetes Power Manager v2.3.1 additions:

• Adding clarification on the "shared" profile param
• update power manager and node-agent manifests use to use image v2.3.1
• power manager and node-agent containers will be built using user 10001
• running node-agent container as root
• improving power-manager container security
• power manager and node-agent containers will now mount the more specific sys/fs/cgroup folder
• release 2.3.1 helm chart for PM

[madalazar]

New images are out:

• docker pull intel/power-operator:v2.3.1
• docker pull intel/power-operator:latest
• docker pull intel/power-node-agent:v2.3.1
• docker pull intel/power-node-agent:latest