Update Spring Plugin to 1.1.0.RELEASE

Update to latest release of Spring Plugin and provide dependency
management for all of its modules

Closes #802

spring-boot-dependencies/pom.xml

@@ -102,7 +102,7 @@
 		<spring-data-solr.version>1.2.0.RC1</spring-data-solr.version>
 		<spring-hateoas.version>0.11.0.RELEASE</spring-hateoas.version>
 		<spring-integration.version>4.0.0.RELEASE</spring-integration.version>
-		<spring-plugin.version>1.0.0.RELEASE</spring-plugin.version>
+		<spring-plugin.version>1.1.0.RELEASE</spring-plugin.version>
 		<spring-amqp.version>1.3.2.RELEASE</spring-amqp.version>
 		<spring-mobile.version>1.1.1.RELEASE</spring-mobile.version>
 		<spring-security.version>3.2.3.RELEASE</spring-security.version>
@@ -953,6 +953,11 @@
 				<artifactId>spring-plugin-core</artifactId>
 				<version>${spring-plugin.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.springframework.plugin</groupId>
+				<artifactId>spring-plugin-metadata</artifactId>
+				<version>${spring-plugin.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.springframework.integration</groupId>
 				<artifactId>spring-integration-core</artifactId>