Custom maven repository key leads to timeouts within custom repository structure #832
Description
When the plugin is executed within a strict nexus/artifactory environment it tries to download dependencies from custom repositories which are not reachable.
[INFO] --- jsonschema2pojo-maven-plugin:0.5.1:generate (default) @ myapp ---
Downloading: http://repo1.maven.org/maven2/io/grpc/grpc-core/maven-metadata.xml
Downloading: https://oss.sonatype.org/content/repositories/snapshots/io/grpc/grpc-core/maven-metadata.xml
Downloading: http://repo.spring.io/plugins-release/io/grpc/grpc-core/maven-metadata.xml
The parent pom defines two (with the oss-parent three) custom repositories. One of them is maven central with the key maven-central. I assume the default is explicitly listed regarding some problem with gradle (original commit).
I would suggest changing the key to central, which is the default key and usually handled in a nexus/artifactory environment as mirror.