Prepare for automated validation scripts

See https://github.com/gradle/gradle-enterprise-build-validation-scripts/blob/main/Gradle.md

Issue gh-1231

etc/nohttp/allowlist.lines

@@ -5,4 +5,5 @@
 ^http://lists.webappsec.org/.*
 ^http://webblaze.cs.berkeley.edu/.*
 ^http://www.w3.org/2000/09/xmldsig.*
-^http://www.gnu.org/.*
+^http://www.gnu.org/.*
+^http://www.apache.org/licenses/.*

settings.gradle

@@ -9,6 +9,7 @@ pluginManagement {
 plugins {
 	id "com.gradle.enterprise" version "3.13.3"
 	id "io.spring.ge.conventions" version "0.0.13"
+	id "com.gradle.common-custom-user-data-gradle-plugin" version "1.10"
 }
 
 dependencyResolutionManagement {
@@ -22,7 +23,7 @@ rootProject.name = "spring-authorization-server"
 def buildFiles = fileTree(rootDir) {
 	def excludes = gradle.startParameter.projectProperties.get("excludeProjects")?.split(",")
 	include "**/*.gradle", "**/*.gradle.kts"
-	exclude "build", "**/gradle", "settings.gradle", "buildSrc", "/build.gradle", ".*", "out"
+	exclude "build", "**/gradle", "settings.gradle", "buildSrc", "/build.gradle", "gradle-*", ".*", "out"
 	if (excludes) {
 		exclude excludes
 	}