DBZ-2645 Add Vitess connector documentation

[keweishang]

https://issues.redhat.com/browse/DBZ-2645

Hi @gunnarmorling, is there a way to build the documentation and website locally to check if everything works? Thanks.

[keweishang]

I used https://github.com/debezium/debezium.github.io to build the website locally that contains the documentation from the main debezium repo. It looks good to me.

[Naros]

We had some recent changes to the documentation as a part of DBZ-2497. I've requested one tiny change above that should address the {context} variable used in links as part of the shared metrics templates. If I may ask, which connector did you use as a basis for the vitess.adoc? I just want to make sure that there aren't any other changes needed.

[keweishang]

@Naros Thanks for reviewing. I've just committed the suggested change. I've used postgresql.adoc as the basis for the vitess.adoc. Let me know if other changes are needed.

[gunnarmorling]

Wow, great work! Thanks a lot, @keweishang! One comment inline.

[gunnarmorling]

So you don't really need the ifdefs at this point. We have those in other connector docs to customize contents between what's shown in the community docs (i.e. on debezium.io/docs) and what's shown in downstream product docs. As this connector is only part of the community distribution, we just can go with a single flavour of these contents and remove the conditionals. Should we decide to include this connector in the downstream offering, we'd revisit this, but then Red Hat docs writers will be able to help with the job. For now I'd suggest to keep things simple.

[keweishang]

Thank you for pointing this out. I actually had the same question. I'll remove the product ifdef parts.

[keweishang]

I removed all the ifdef::product[]. I also kept the content of the ifdef::community[], but removed the ifdef::community[] logic.

[jpechane]

@keweishang Great job! Applied

[keweishang]

Awesome! Thank you @jpechane