Setup nexus credentials to build parent modules

.ci/jenkins/Jenkinsfile.deploy

@@ -406,12 +406,16 @@ MavenCommand getOptaplannerQuickstartsMavenCommand() {
  * Builds the parent modules and the BOM so that project depending on these artifacts can resolve.
  */
 void mavenCleanInstallOptaPlannerParents() {
-    configFileProvider([configFile(fileId: env.MAVEN_SETTINGS_CONFIG_FILE_ID, variable: 'MAVEN_SETTINGS_FILE')]) {
-        getOptaplannerMavenCommand()
-                .skipTests(true)
-                .withOptions(['-U', '-pl org.optaplanner:optaplanner-build-parent,org.optaplanner:optaplanner-bom', '-am'])
-                .withSettingsXmlFile(MAVEN_SETTINGS_FILE)
-                .run('clean install')
+    withCredentials([usernamePassword(credentialsId: env.MAVEN_REPO_CREDS_ID, usernameVariable: 'REPOSITORY_USER', passwordVariable: 'REPOSITORY_TOKEN')]) {
+        configFileProvider([configFile(fileId: env.MAVEN_SETTINGS_CONFIG_FILE_ID, variable: 'MAVEN_SETTINGS_FILE')]) {
+            getOptaplannerMavenCommand()
+                    .skipTests(true)
+                    .withOptions(['-U', '-pl org.optaplanner:optaplanner-build-parent,org.optaplanner:optaplanner-bom', '-am'])
+                    .withSettingsXmlFile(MAVEN_SETTINGS_FILE)
+                    .withProperty('apache.repository.username', "${REPOSITORY_USER}")
+                    .withProperty('apache.repository.password', "${REPOSITORY_TOKEN}")
+                    .run('clean install')
+        }
     }
 }