Get it while it's hot!
<dependency>
<groupId>io.pivotal.cfenv</groupId>
<artifactId>java-cfenv-boot</artifactId>
<version>3.1.5</version>
</dependency>
Does this release sound a lot like 3.1.3 ?
Yes it does, turned out DB2 support was not only (wrongly) converting username and password strings, but also not considering other credentials fields such as those providing the full jdbc url. Also, DB2Driver does not support additional properties (ERRORCODE=-4461), so username and password should just be provided in the url.
See : #243 for more details