Add debugging hints.

Signed-off-by: Alexander Diewald <diewald@fortiss.org>
3 jobs for master in 19 minutes and 41 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #50338
build

00:17:10

 
  Test
failed #50339
test

00:02:30

 
  Deploy
skipped #50340
deploy
 
Name Stage Failure
failed
test Test There is an unknown failure, please try again
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <args> -rf :org.fortiss.af3.phoenix.product.tests
ERROR: Job failed: exit code 1