This commit moves the Java9-specific profile to each sample rather than impacting all samples. That way, affected samples are more self contained. Closes gh-12302
== Spring Boot Flyway Sample This sample demonstrates the flyway auto-configuration support. You can look at `http://localhost:8080/actuator/flyway` to review the list of scripts. This sample also enables the H2 console (at `http://localhost:8080/h2-console`) so that you can review the state of the database (the default jdbc url is `jdbc:h2:mem:testdb`).