[BUG] Shade warnings when building the tools artifact

[jlowe]

Describe the bug
Building produces the following warning:

[WARNING] rapids-4-spark-tools_2.12-22.02.0-SNAPSHOT.jar, scala-library-2.12.15.jar define 1 overlapping resource: 
[WARNING]   - META-INF/MANIFEST.MF
[WARNING] maven-shade-plugin has detected that some class files are
[WARNING] present in two or more JARs. When this happens, only one
[WARNING] single version of the class is copied to the uber jar.
[WARNING] Usually this is not harmful and you can skip these warnings,
[WARNING] otherwise try to manually exclude artifacts based on
[WARNING] mvn dependency:tree -Ddetail=true and the above output.
[WARNING] See http://maven.apache.org/plugins/maven-shade-plugin/

Steps/Code to reproduce bug
mvn clean package -DskipTests

Expected behavior
Build should not emit shade warnings.