Fix published Maven POMs

Prior to this commit, the published Maven POMs would not pass the Maven
Central mandatory checks.

This commit adds the missing project name and description metadata for
most artifacts. The Spring Boot Gradle plugin artifact was also missing
this information and this is now added in the plugin metadata itself.
This is also updating the project page URL which is now hosted directly
on spring.io.

Fixes gh-21457

Author: bclozel

buildSrc/src/main/java/org/springframework/boot/build/MavenPublishingConventions.java

@@ -72,7 +72,8 @@ void apply(Project project) {
 	}
 
 	private void customizePom(MavenPom pom, Project project) {
-		pom.getUrl().set("https://projects.spring.io/spring-boot/#");
+		pom.getUrl().set("https://spring.io/projects/spring-boot");
+		pom.getName().set(project.provider(project::getName));
 		pom.getDescription().set(project.provider(project::getDescription));
 		pom.organization(this::customizeOrganization);
 		pom.licenses(this::customizeLicences);

spring-boot-project/spring-boot-docs/build.gradle

@@ -6,6 +6,8 @@ plugins {
 	id "org.springframework.boot.deployed"
 }
 
+description = "Spring Boot Docs"
+
 configurations {
 	actuatorApiDocumentation
 	asciidoctorExtensions

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/build.gradle

@@ -51,6 +51,8 @@ gradlePlugin {
 	plugins {
 		springBootPlugin {
 			id = "org.springframework.boot"
+			displayName = "Spring Boot Gradle Plugin"
+			description = "Spring Boot Gradle Plugin"
 			implementationClass = "org.springframework.boot.gradle.plugin.SpringBootPlugin"
 		}
 	}