Standardize Build

The build now uses spring build conventions to simplify the build

Fixes gh-4284

samples/xml/gae/spring-security-samples-xml-gae.gradle

@@ -0,0 +1,47 @@
+apply plugin: 'io.spring.convention.spring-sample-war'
+apply plugin: 'appengine'
+
+buildscript {
+	repositories {
+		mavenCentral()
+	}
+	dependencies {
+		classpath "com.google.appengine:gradle-appengine-plugin:$gaeVersion"
+	}
+}
+
+appengine {
+	downloadSdk = true
+}
+
+// Remove logback as it causes security issues with GAE.
+configurations.runtime.exclude(group: 'ch.qos.logback')
+
+dependencies {
+	appengineSdk "com.google.appengine:appengine-java-sdk:$gaeVersion"
+
+	compile project(':spring-security-core')
+	compile project(':spring-security-taglibs')
+	compile project(':spring-security-web')
+	compile jstlDependencies
+	compile slf4jDependencies
+	compile "com.google.appengine:appengine-api-1.0-sdk:$gaeVersion"
+	compile "com.google.appengine:appengine-api-stubs:$gaeVersion"
+	compile 'javax.validation:validation-api'
+	compile 'org.hibernate:hibernate-validator'
+	compile 'org.springframework:spring-beans'
+	compile 'org.springframework:spring-context'
+	compile 'org.springframework:spring-context-support'
+	compile 'org.springframework:spring-web'
+	compile 'org.springframework:spring-webmvc'
+
+	providedCompile 'javax.servlet:javax.servlet-api'
+
+	runtime project(':spring-security-config')
+
+	testCompile "com.google.appengine:appengine-testing:$gaeVersion"
+
+	testRuntime "com.google.appengine:appengine-api-labs:$gaeVersion"
+}
+
+appengineRun.onlyIf { !gradle.taskGraph.hasTask(appengineFunctionalTest) }