[WFLY-20952] Added integration tests to the JTS quickstart

[jmfinelli]

Addresses WFLY-20952

[kstekovi]

Review of the integration tests added to the JTS quickstart.

[kstekovi]

Apologies for the late comments — these should have been caught in the first review round but I ran out of time yesterday.

[kstekovi]

Nitpick on jts/README-source.adoc (pre-existing, out of scope for this PR): the AsciiDoc build emits warnings at lines 157, 165, 172 — list item index: expected N, got 1 — because the PostgreSQL driver setup section repeats 1. for each numbered step instead of using explicit numbering (1., 2., 3., 4.). This has no effect on the rendered output; the HTML displays the correct sequence. The fix would be replacing the repeated 1. with explicit indices.

[kstekovi]

All review comments from both rounds have been addressed. The integration tests are well structured, the timing issues are handled correctly with polling helpers, the management client dependency has been cleanly replaced with a REST endpoint, and the README now documents the expected warnings for both deployment and integration test phases. LGTM!

[emmartins]

Sorry, we need one more round.

[emmartins]

Thanks @jmfinelli

[emmartins]

Sorry missed something

[emmartins]

@jmfinelli this is the way, thank you