* Fix Gradle Deprecation warning as declaring an is- property with a Boolean type has been deprecated.
* Make use of new layout.settingsFolder api to address some cross project references
* Fix buildParams snapshot check for multiprojet projects
The tests added in #119468 do not work when executed in the
`release-test` pipeline: at some point a 9.0 non-snapshot node tries to
join the 8.18.0-SNAPSHOT cluster which is impossible due to a missing
`esql.metrics_syntax` feature which is only declared in snapshot builds.
Additionaly, the tests rely on unrelease code in 8.x so they won't work
until 8.18.0 is released.
I don't know how we deal with such issues today, but I'd like to unmute
the tests so that they are executed on CI while being disabled in
`release-test`.
Releates #119550
This change introduces a new QA project to test Lucene
support for reading indices created in version N-2.
The test suite is inspired from the various full-cluster
restart suites we already have. It creates a cluster in
version N-2 (today 7.17.25), then upgrades the cluster
to N-1 (today 8.18.0) and finally upgrades the cluster
to the current version (today 9.0), allowing to execute
test methods after every upgrade.
The test suite has two variants: one for searchable
snapshots and one for snapshot restore. The suites
demonstrates that Elasticsearch does not allow
reading indices written in version N-2 but we hope
to make this feasible. Also, the tests can be used for
investigation and debug with the command
`./gradlew ":qa:lucene-index-compatibility:check" --debug-jvm-server`
Relates ES-10274
Tanguy Leroux