Major Description
On branch-2 derivatives, I noticed on PR builds of JDK11+Hadoop3 that running tests with -pl results in a warning from maven
[WARNING]
[WARNING] Some problems were encountered while building the effective model for org.apache.hbase:hbase-build-configuration:pom:2.6.0-SNAPSHOT
[WARNING] 'profiles.profile[hadoop-3.0].dependencyManagement.dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.apache.hadoop:hadoop-mapreduce-client-app:test-jar -> duplica
te declaration of version ${hadoop-three.version} @ org.apache.hbase:hbase:2.6.0-SNAPSHOT, /Users/ndimiduk/repos/apache/hbase/pom.xml, line 3816, column 23
[WARNING]
[WARNING] Some problems were encountered while building the effective model for org.apache.hbase:hbase:pom:2.6.0-SNAPSHOT
[WARNING] 'profiles.profile[hadoop-3.0].dependencyManagement.dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.apache.hadoop:hadoop-mapreduce-client-app:test-jar -> duplica
te declaration of version ${hadoop-three.version} @ line 3816, column 23
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
I think they're harmless, but we should clean them up.