Include latest versions of 1.7 and 1.8 and 1.9 without cve patches (#8991)
Include latest versions of 1.7 and 1.8 and 1.9 without cve patches (#8991)

* Include latest versions of 1.7 and 1.8 and 1.9 without cve patches

* Remove language around LTS

* Update release table

* Code review comments

* Say we don't support 1.7 and below

* Put 1.9.1 in patched versions
istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io