Bring in troubleshooting info for topics we already have documented. Any topics that are not addressed in docs, Jira issue will be created for that topic. 

Add relevant content from the upstream Kiali validation page to new troubleshooting topics after the description of the resource (following our Procedure, Validate, Troubleshoot pattern).

https://kiali.io/docs/features/validations/

Kiali has validations for the following types of resources:

• AuthorizationPolicy  (documented in Security assembly)
• DestinationRule  (documented in Security assembly)
• Gateways   (documented in Traffic Management assembly)
• PeerAuthentication  (documented in Security assembly)
• Services  (YAML files undocumented)
• ServiceMeshPolicy  (YAML files undocumented)
• ServiceRole  (YAML files undocumented)
• Sidecar (injection mentioned in prepare-to-deploy-applications-ossm assembly, but YAML not documented)
• VirtualServices (documented in Traffic Management assembly)

https://medium.com/kialiproject/kiali-validations-spot-the-misconfigurations-of-your-istio-service-mesh-bad1f5d00a79