Sonar addon doesn't set environment variables

I’m not sure how or why this has occured however this build appears to fail because having updated my sonar plugin, it’s failing to find SONAR_SCANNER_HOME environment variable which should be exported as an environment variable by the sonar plugin I have configured.

I would have blamed my sbt plugin however I was able to fix the build here by manually defining the SONAR_SCANNER_HOME environment variable