Run Sonar scans using JDK11.

java-version will only set java for the maven build
part of the job, the sonar scan will use
sonarcloud-java-version which is set to openjdk11.

Projects not compatible with JDK11 will be able to
run their build with java-version set to their JDK
preference.
https://sonarcloud.io/documentation/user-guide/move-analysis-java-11/

Issue: RELENG-3176
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: Ida96043317da7671034416df6a438350041f4731