Support commercial repositories in effective BOM and Ivy

Update `BomExtension` to resolve '{spring.mavenRepositories}' and add
credentials to `ivysettings.xml` and `settings.xml`.

Closes gh-44050

Author: philwebb

buildSrc/src/main/java/org/springframework/boot/build/bom/BomExtension.java

@@ -59,6 +59,7 @@
 import org.w3c.dom.NodeList;
 
 import org.springframework.boot.build.DeployedPlugin;
+import org.springframework.boot.build.RepositoryTransformersExtension;
 import org.springframework.boot.build.bom.Library.Exclusion;
 import org.springframework.boot.build.bom.Library.Group;
 import org.springframework.boot.build.bom.Library.LibraryVersion;
@@ -132,6 +133,8 @@ public void library(String name, String version, Action<LibraryHandler> action)
 
 	public void effectiveBomArtifact() {
 		Configuration effectiveBomConfiguration = this.project.getConfigurations().create("effectiveBom");
+		RepositoryTransformersExtension repositoryTransformers = this.project.getExtensions()
+			.getByType(RepositoryTransformersExtension.class);
 		this.project.getTasks()
 			.matching((task) -> task.getName().equals(DeployedPlugin.GENERATE_POM_TASK_NAME))
 			.all((task) -> {
@@ -144,8 +147,10 @@ public void effectiveBomArtifact() {
 					sync.dependsOn(task);
 					sync.setDestinationDir(generatedBomDir);
 					sync.from(((GenerateMavenPom) task).getDestination(), (pom) -> pom.rename((name) -> "pom.xml"));
-					sync.from(this.project.getResources().getText().fromString(loadSettingsXml()),
-							(settingsXml) -> settingsXml.rename((name) -> "settings.xml"));
+					sync.from(this.project.getResources().getText().fromString(loadSettingsXml()), (settingsXml) -> {
+						settingsXml.rename((name) -> "settings.xml");
+						settingsXml.filter(repositoryTransformers.mavenSettings());
+					});
 				});
 				File effectiveBom = this.project.getLayout()
 					.getBuildDirectory()

buildSrc/src/main/resources/effective-bom-settings.xml

@@ -7,17 +7,7 @@
 				<activeByDefault>true</activeByDefault>
 			</activation>
 			<repositories>
-				<repository>
-					<id>spring-snapshot</id>
-					<url>https://repo.spring.io/snapshot</url>
-					<snapshots>
-						<enabled>true</enabled>
-					</snapshots>
-				</repository>
-				<repository>
-					<id>spring-milestone</id>
-					<url>https://repo.spring.io/milestone</url>
-				</repository>
+				<!-- {spring.mavenRepositories} -->
 			</repositories>
 		</profile>
 	</profiles>

spring-boot-project/spring-boot-tools/spring-boot-antlib/src/it/sample/ivysettings.xml

@@ -11,5 +11,6 @@
 			<!-- {spring.mavenRepositories} -->
 		</chain>
 	</resolvers>
+    <credentials host="${env.COMMERCIAL_RELEASE_REPO_URL}" username="${env.COMMERCIAL_REPO_USERNAME}" passwd="${env.COMMERCIAL_REPO_PASSWORD}"/>
+    <credentials host="${env.COMMERCIAL_SNAPSHOT_REPO_URL}" username="${env.COMMERCIAL_REPO_USERNAME}" passwd="${env.COMMERCIAL_REPO_PASSWORD}"/>
 </ivysettings>
-	

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/projects/settings.xml

@@ -1,6 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <settings>
 	<localRepository>@localRepositoryPath@</localRepository>
+	<servers>
+		<server>
+			<id>spring-commercial-release</id>
+			<username>${env.COMMERCIAL_REPO_USERNAME}</username>
+			<password>${env.COMMERCIAL_REPO_PASSWORD}</password>
+		</server>
+		<server>
+			<id>spring-commercial-snapshot</id>
+			<username>${env.COMMERCIAL_REPO_USERNAME}</username>
+			<password>${env.COMMERCIAL_REPO_PASSWORD}</password>
+		</server>
+	</servers>
 	<profiles>
 		<profile>
 			<id>it-repo</id>