* Update test framework to use 1.6.0-beta.0
* Go back to copies from env var
* Add more test targets, fix mtls test (new PA added)
* Update to use Istio SHA from go.mod (convert to long SHA)
* Try and remove TAG from prow
* Debug TAG not being set
* Fix paralization issue
* Remove some extra output
* Review comments
* User guide tests and remove manual steps for plugging in CA cert
- Add user guide tests for plugging in CA cert
- Remove the manual steps in the user guide of plugging in CA cert
to make it easier for an user to try the guide.
* Fix SC2046 lint error and the trafficmanagement test errors