The UMA multi-tenancy team installation is not reporting Kubernetes metrics

Products

• APM

Issue/Introduction

This is a UMA multi-tenancy team installation
The UMA agent is connected to the EM and agent is reporting default metric. 
But none of the extension metrics (like kubernete or any other extension) are being reported.  

Environment

Release : 21.3

Component : APM Power Packs

Resolution

There were configuration issues with UMA admin in the cluster. Also the list of monitored namespaces in the team file was declared as an array of strings instead of a one string with comma separated namespaces.