Add use layer 7 proxy for reactive pg client

[juandiii]

This enables configuration of the new setUseLayer7Proxy value provided by Vert.x.

Level 7 proxies can load balance queries on several connections to the actual database. When it happens, the client can be confused by the lack of session affinity and unwanted errors can happen like ERROR: unnamed prepared statement does not exist (26000).

See more information in Using a level 7 Proxy

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[cescoffier]

Awesome! Thanks!

[gsmet]

Thanks! I added a couple of suggestions.

Is it supported by the other reactive db clients? If so, maybe we should generalize it?

[juandiii]

Thanks! I added a couple of suggestions.

Is it supported by the other reactive db clients? If so, maybe we should generalize it?

HI @gsmet, only is supported for reactive PG Client.

[gsmet]

Nice! I rebased to squash the commits, thanks for the quick turnaround.

[quarkus-bot]

✔️ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

[gsmet]

And merged. Thanks for your contribution!