Add troubleshooting section to EKS integration docs

The following discussions from !19667 (merged) should be addressed:

• @ealcantara started a discussion: (+1 comment)

       to allow Amazon EKS and the Kubernetes control panel to manage AWS resources on your behalf.

• @danielgruesso started a discussion: (+1 comment)

  @tigerwnz I received this error while testing

  

  It would be ideal if the docs have a "troubleshooting common issues" section (or something to that effect), guiding the user on how to correct (I'm unsure on how to correct that particular error).