Upgrade to Gradle Enterprise 3.2

Also use the "io.spring.gradle-enterprise-conventions" plugin for
configuring Gradle Enterprise Cache support.

buildSrc/settings.gradle

@@ -1 +0,0 @@
-apply from: "../gradle/build-cache-settings.gradle"

gradle/build-cache-settings.gradle

@@ -1,18 +0,0 @@
-buildCache {
-	local {
-		enabled = true
-	}
-	remote(HttpBuildCache) {
-		enabled = true
-		url = 'https://ge.spring.io/cache/'
-		def cacheUsername = System.getenv('GRADLE_ENTERPRISE_CACHE_USERNAME')
-		def cachePassword = System.getenv('GRADLE_ENTERPRISE_CACHE_PASSWORD')
-		if (cacheUsername && cachePassword) {
-			push = true
-			credentials {
-				username = cacheUsername
-				password = cachePassword
-			}
-		}
-	}
-}

settings.gradle

@@ -6,11 +6,10 @@ pluginManagement {
 }
 
 plugins {
-	id("com.gradle.enterprise").version("3.1.1")
+	id "com.gradle.enterprise" version "3.2"
+	id "io.spring.gradle-enterprise-conventions" version "0.0.2"
 }
 
-apply from: "$rootDir/gradle/build-cache-settings.gradle"
-
 include "spring-aop"
 include "spring-aspects"
 include "spring-beans"