How to view pipeline run logs when jx-dash is not available

[vpvmohan]

This is a Feature Request
Should add documentation on how to view pipeline logs from cluster directly.

What would you like to be added
The place where we are providing details on viewing pipe logs using jx dash

Why is this needed
This will help JenkinsX user when they face an issue like jx dash ui unable to retrieve log file from S3 bucket, or when jx dash ui is not available due to infra issue or also when jx dash got stuck while loading logs

Comments
Something like below will be more helpful ...

1. The pipelines are run on pods, so you can ultimately get the logs from there. To see the pipelineruns sorted by time, use this command
   jx ns jx
   kubectl get pipelineruns --sort-by=.metadata.creationTimestamp
2. When you find the pipelinerun you want to investigate, run
   kubectl describe pipelinerun
3. There should be a "message" field describing any errors, which you can get using a command like this
   kubectl describe pipelinerun | grep -i message
4. Also, you can find the pod the pipelinerun used and read logs directly from there
   kubectl describe pipelinerun | grep -i 'pod name'
   Should output the name of the pod, then do
   kubectl logs