Overview of the changes:
- Adding ability to verify that expected output occurs a number of times consecutively. This is needed for https://github.com/istio/istio.io/pull/8402.
- Moving snapshot checking logic to Go code so that it can be separated out into separate test steps, which are timed and contain their own output directories/files. This makes the code cleaner and also makes the snapshot logic more transparent.
- Updating debug.sh to use newer bash syntax that allows it to dynamically select a free file descriptor. Without this, I was seeing all commands echoed to my console in goland.
This was noticed when investigating why errors are not causing the test to fail. It's not clear if this is related to the problem, but the existing logic was definitely atypical.
* Update istio version for testing
* Framework changes in base istio required changes
* Work on whitelist
* Remove whitelist and move to a new feature
* Another istio.io/istio update
* Another framework change - remove test suite name
Nathan Mittler
Hongyi Zhang
Eric Van Norman
Frank Budinsky