Use spring-build-conventions Bom plugin

Fixes gh-4954

bom/spring-security-bom.gradle

@@ -1,5 +1,4 @@
-apply plugin: 'maven-bom'
-apply plugin: 'io.spring.convention.artifactory'
+apply plugin: 'io.spring.convention.bom'
 
 sonarqube.skipProject = true
 

build.gradle

@@ -1,6 +1,6 @@
 buildscript {
 	dependencies {
-		classpath 'io.spring.gradle:spring-build-conventions:0.0.8.RELEASE'
+		classpath 'io.spring.gradle:spring-build-conventions:0.0.9.BUILD-SNAPSHOT'
 		classpath "org.springframework.boot:spring-boot-gradle-plugin:$springBootVersion"
 	}
 	repositories {

buildSrc/src/main/groovy/MavenBomPlugin.groovy

@@ -1,21 +0,0 @@
-import org.gradle.api.DefaultTask
-import org.gradle.api.GradleException
-import org.gradle.api.Plugin
-import org.gradle.api.Project
-import org.gradle.api.Task
-import org.gradle.api.plugins.*
-import org.gradle.api.tasks.*
-import org.gradle.api.tasks.TaskAction
-
-public class MavenBomPlugin implements Plugin<Project> {
-	static String MAVEN_BOM_TASK_NAME = "mavenBom"
-
-	public void apply(Project project) {
-		project.plugins.apply(JavaPlugin)
-		project.plugins.apply(MavenPlugin)
-
-		project.group = project.rootProject.group
-		project.task(MAVEN_BOM_TASK_NAME, type: MavenBomTask, group: 'Generate', description: 'Configures the pom as a Maven Build of Materials (BOM)')
-		project.install.dependsOn project.mavenBom
-	}
-}

buildSrc/src/main/groovy/MavenBomTask.groovy

@@ -1,55 +0,0 @@
-import groovy.xml.MarkupBuilder
-
-import org.gradle.api.DefaultTask
-import org.gradle.api.Project
-import org.gradle.api.tasks.*
-
-public class MavenBomTask extends DefaultTask {
-
-	Set<Project> projects = []
-
-	File bomFile
-
-
-	public MavenBomTask() {
-		this.group = "Generate"
-		this.description = "Generates a Maven Build of Materials (BOM). See http://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html#Importing_Dependencies"
-		this.projects = project.subprojects
-		this.bomFile = project.file("${->project.buildDir}/maven-bom/${->project.name}-${->project.version}.txt")
-	}
-
-	@TaskAction
-	public void configureBom() {
-		project.configurations.archives.artifacts.clear()
-
-		bomFile.parentFile.mkdirs()
-		bomFile.write("Maven Build of Materials (BOM). See http://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html#Importing_Dependencies")
-		project.artifacts {
-			// work around GRADLE-2406 by attaching text artifact
-			archives(bomFile)
-		}
-		project.install {
-			repositories.mavenInstaller {
-				pom.whenConfigured {
-					packaging = "pom"
-					withXml {
-						asNode().children().last() + {
-							delegate.dependencyManagement {
-								delegate.dependencies {
-									projects.sort { dep -> "$dep.group:$dep.name" }.each { p ->
-
-										delegate.dependency {
-											delegate.groupId(p.group)
-											delegate.artifactId(p.name)
-											delegate.version(p.version)
-										}
-									}
-								}
-							}
-						}
-					}
-				}
-			}
-		}
-	}
-}

buildSrc/src/main/resources/META-INF/gradle-plugins/maven-bom.properties

@@ -1 +0,0 @@
-implementation-class=MavenBomPlugin