Merge 72eaa4a / 2e9fb8e into 3.4.7 (fixes artifactory deploys)

 - add spring release repo to snapshot builds (for back to snapshots
 japicmp baselining)
 - load artifactory plugin from Maven Central and use latest version

build.gradle

@@ -26,6 +26,7 @@ buildscript {
 	}
 	dependencies {
 		classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}"
+		classpath "org.jfrog.buildinfo:build-info-extractor-gradle:4.24.5" //applied in individual submodules
 	}
 }
 
@@ -38,7 +39,7 @@ plugins {
 	id "de.undercouch.download" version "3.4.3"
 	id "org.unbroken-dome.test-sets" version "3.0.0" apply false
 	// note: build scan plugin now must be applied in settings.gradle
-	id "com.jfrog.artifactory" version "4.15.2" apply false
+	// plugin portal is now outdated due to bintray sunset, at least for artifactory gradle plugin
 	id 'biz.aQute.bnd.builder' version '5.0.1' apply false
 	id 'io.spring.nohttp' version '0.0.5.RELEASE'
 	id "io.github.reyerizo.gradle.jcstress" version "0.8.11" apply false
@@ -88,7 +89,7 @@ ext {
 	// Used as a way to get jsr305 annotations.
 	// 3.0.1 is the last version that has the 'annotations' jar needed on the compile classpath
 	findbugsVersion = '3.0.1'
-	
+
 	jsr166BackportVersion = '1.0.0.RELEASE'
 
 	// Blockhound
@@ -144,6 +145,8 @@ configure(subprojects) { p ->
 
 		mavenLocal()
 		if (version.endsWith('-SNAPSHOT') || version.contains('-SNAPSHOT-')) { //classic or customized snapshots
+			//do not wait for Maven Central when going back to snapshots and comparing for baseline
+			maven { url 'https://repo.spring.io/release' }
 			maven { url 'https://repo.spring.io/snapshot' }
 		}
 		maven { url 'https://repo.spring.io/milestone' }