[master] [release-1.9] Add blog for zero configuration Istio (#9073)
[master] [release-1.9] Add blog for zero configuration Istio (#9073)

* Add blog for zero configuration Istio

The intent here is to show off what Istio provides out of the box, to
attempt to counteract some of the reputation Istio has gotten for being
over complicated/requiring too many CRDs.

* fix links

* Address comments

* Apply suggestions from code review

Co-authored-by: craigbox <3355725988ab83bea208126f1f041f483a3559f0@google.com>

Co-authored-by: John Howard <d864760d805af0f2f245f85d18382dd184bb0c60@google.com>
Co-authored-by: craigbox <3355725988ab83bea208126f1f041f483a3559f0@google.com>
istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io