Add the Spring IO plugin to spring-session and spring-session-data-redis

Fixes #62

gradle/java.gradle

@@ -11,6 +11,8 @@ group = 'org.springframework.session'
 sourceCompatibility = 1.5
 targetCompatibility = 1.5
 
+ext.springIoVersion = project.hasProperty('platformVersion') ? platformVersion : '1.1.0.BUILD-SNAPSHOT'
+
 ext.spockDependencies = [
         dependencies.create("org.spockframework:spock-core:$spockVersion") {
             exclude group: 'junit', module: 'junit-dep'

spring-session-data-redis/build.gradle

@@ -1,9 +1,13 @@
 apply from: JAVA_GRADLE
 apply from: MAVEN_GRADLE
 
+apply plugin: 'spring-io'
+
 dependencies {
     compile project(':spring-session'),
             "org.springframework.data:spring-data-redis:$springDataRedisVersion",
             "redis.clients:jedis:$jedisVersion",
             "org.apache.commons:commons-pool2:$commonsPoolVersion"
+
+    springIoVersions "io.spring.platform:platform-versions:${springIoVersion}@properties"
 }

spring-session/build.gradle

@@ -1,6 +1,8 @@
 apply from: JAVA_GRADLE
 apply from: MAVEN_GRADLE
 
+apply plugin: 'spring-io'
+
 project.conf2ScopeMappings.addMapping(MavenPlugin.TEST_COMPILE_PRIORITY + 1, project.configurations.getByName("integrationTestCompile"), Conf2ScopeMappingContainer.TEST)
 project.conf2ScopeMappings.addMapping(MavenPlugin.TEST_COMPILE_PRIORITY + 2, project.configurations.getByName("integrationTestRuntime"), Conf2ScopeMappingContainer.TEST)
 check.dependsOn integrationTest
@@ -26,6 +28,8 @@ dependencies {
             "org.springframework.security:spring-security-core:$springSecurityVersion"
 
     jacoco "org.jacoco:org.jacoco.agent:0.7.2.201409121644:runtime"
+
+    springIoVersions "io.spring.platform:platform-versions:${springIoVersion}@properties"
 }
 
 ext.javadocLinks = [