Consul's Connect CA documentation mentions future releases will
support a pluggable CA system. This sentence has existed in the docs
for over two years, however there are currently no plans to develop
this feature on the near-term roadmap.
This commit removes this sentence to avoid giving the impression that
this feature will be available in an upcoming release.
* website: purge existing directory
* website: bulk update from master with changes specific to the upcoming 1.9 release excluded
* test: revert envoy_version to 1.14.2 for existing-ca-path golden file