[Bug] - 503 trying to get dependencies when building jar

[aaronweissler]

Describe the bug When trying to build inspectIT Ocelot, getting the dependency jarCheck from the Maven repository with url "https://repository.novatec-gmbh.de/content/repositories/3rd_party_libs/" fails with a 503 status code.

To Reproduce Steps to reproduce the behavior:

1. Build inspectIT Ocelot using gradle task assemble
2. See error

Workaround Until properly fixed, you can comment out lines 43-45 buildTools( 'jarcheck:jarcheck:1.5' ) and line 210 jar.dependsOn checkDependencyJavaVersions in inspectit-ocelot-core/build.gradle, which disables the check using jarCheck, and lines 17-20 maven { name 'Nexus@NT' url "https://repository.novatec-gmbh.de/content/repositories/3rd_party_libs/" } in build.gradle to remove the repo.