Update .gitlab-ci.yml

1 job for master in 1 minute and 10 seconds (queued for 1 second)
Name Stage Failure
failed
build Test
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.jacoco:jacoco-maven-plugin:0.8.2 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.jacoco:jacoco-maven-plugin:jar:0.8.2: Could not transfer artifact org.jacoco:jacoco-maven-plugin:pom:0.8.2 from/to central (http://repo.maven.apache.org/maven2): Failed to transfer file: http://repo.maven.apache.org/maven2/org/jacoco/jacoco-maven-plugin/0.8.2/jacoco-maven-plugin-0.8.2.pom. Return code is: 501 , ReasonPhrase:HTTPS Required. -> [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/PluginResolutionException
ERROR: Job failed: exit code 1