* 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
(cherry picked from commit e19b2264af)
# Conflicts:
# build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/BaseInternalPluginBuildPlugin.java
# docs/build.gradle
# qa/entitlements/build.gradle
# x-pack/qa/multi-project/core-rest-tests-with-multiple-projects/build.gradle
# x-pack/qa/multi-project/xpack-rest-tests-with-multiple-projects/build.gradle
f4e505e635