Add deployment integration tests

Add deployment tests for Tomcat, TomEE and WildFly to ensure that
a basic Spring Boot application can be deployed to a traditional
Application server.

Since the deployment tests can be quite slow, they currently only
run in the "full" build profile.

Fixes gh-1736

spring-boot-full-build/pom.xml

@@ -55,6 +55,7 @@
 		<module>../spring-boot-starters</module>
 		<module>../spring-boot-cli</module>
 		<module>../spring-boot-samples</module>
+		<module>../spring-boot-deployment-tests</module>
 		<module>../spring-boot-integration-tests</module>
 		<module>../spring-boot-docs</module>
 	</modules>