Set user for CI build in order to get a nice gravatar.

Closes #1645
See spring-projects/spring-data-jpa@f52aa75
See spring-projects/spring-data-jpa#3142

Jenkinsfile

@@ -102,7 +102,7 @@ pipeline {
 			steps {
 				script {
 					docker.image(p['docker.java.main.image']).inside(p['docker.java.inside.basic']) {
-						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ' +
+						sh 'MAVEN_OPTS="-Duser.name=spring-builds+jenkins -Duser.home=/tmp/jenkins-home" ' +
 						    'GRADLE_ENTERPRISE_CACHE_USERNAME=${GRADLE_ENTERPRISE_CACHE_USR} ' +
                         	'GRADLE_ENTERPRISE_CACHE_PASSWORD=${GRADLE_ENTERPRISE_CACHE_PSW} ' +
                         	'GRADLE_ENTERPRISE_ACCESS_KEY=${GRADLE_ENTERPRISE_ACCESS_KEY} ' +

ci/test.sh

@@ -10,6 +10,6 @@ cp spring-data-relational/src/test/java/org/springframework/data/ProxyImageNameS
 
 mkdir -p /tmp/jenkins-home
 chown -R 1001:1001 .
-MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" \
+MAVEN_OPTS="-Duser.name=spring-builds+jenkins -Duser.home=/tmp/jenkins-home" \
   ./mvnw -s settings.xml \
   -P${PROFILE} clean dependency:list verify -Dsort -U -B -Dmaven.repo.local=/tmp/jenkins-home/.m2/spring-data-jdbc