Update .gitlab-ci.yml

1 job for master in 35 seconds (queued for 1 second)
Status Job ID Name Coverage
  Linux
failed #1542801
MasterJobLinux

00:00:35

 
Name Stage Failure
failed
MasterJobLinux Linux
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.8.1:deploy (default-deploy) on project simulation: Failed to deploy artifacts: Could not transfer artifact montisim:simulation:pom:3.1.7 from/to se-nexus (https://nexus.se.rwth-aachen.de/content/repositories/embeddedmontiarc-releases/): Transfer failed for https://nexus.se.rwth-aachen.de/content/repositories/embeddedmontiarc-releases/montisim/simulation/3.1.7/simulation-3.1.7.pom 400 Bad Request -> [Help 1]
[ERROR]
[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/MojoExecutionException
Cleaning up file based variables
ERROR: Job failed: exit code 1