* automated test for viewing traces from zipkin dashboard (expectation is that traces are seen correctly)
* fix shellcheck linting errors
* remove verification of traces and just check if zipkin dashboard is accessible through port-forward
* Modify snippet generation logic to take {{< boilerplate >}} into account
* snippets for boilerplate
* fix shellcheck (linting) issues
* snippets generated with new logic
* automated test - check if zipkin dashboard is accessible by port-forwarding (as we cannot verify screenshot and the trace is already verified in istio/istio integration test
* clean up ZIPKIN_URL comment
* Address code review comments
1. Simplify boilerplate snippet filenames (remove .md_snips)
2. Sourced filenames should be in double quote(") instead of single quote(')
* fix gencheck_istio flake
* do not generate or include boilerplate snippets if there is not {{<text>}} in them
* fix linting errors in snip.py
* fix bug - filter out boilerplates without snippets very early
danielmenezesbr
Eric Van Norman
masquee
Suchith J N
Frank Budinsky
Navraj Singh Chhina
John Howard