add skip copy-dependencies parameters

[evyaroshevich]

In the cdxgen update, a new function, mvn dependency:copy-dependencies, was added after the makeAggregateBom task. This addition has completely broken my pipelines because makeAggregateBom was working with the pom.xml file and did not require project compilation. However, now, for copy-dependencies, project compilation is sometimes necessary when one module depends on the JAR of another module.

Another issue is that if I place cdxgen after the build step in the pipeline, copy-dependencies will already be executed there, and cdxgen will redundantly execute copy-dependencies again.

Furthermore, the general additional parameters, MVN_ARGS, sometimes do not fit the purposes of makeAggregateBom and copy-dependencies. They sometimes require different parameters for their own purposes.