* Add documentations for SkyWalking integration and task
* Add script to undeploy skywalking
* Clean up istio namespace
* Update index.md
* Address review comments
* Apply suggestions from code review
Co-authored-by: Eric Van Norman <ericvn@us.ibm.com>
Co-authored-by: Eric Van Norman <ericvn@us.ibm.com>
kezhenxu94