[MDEP-758] Skip analysis of test scope dependencies when tests are not compiled

**[Peter Bull](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=pbull-oracle)** opened **[MDEP-758](https://issues.apache.org/jira/browse/MDEP-758?redirect=false)** and commented

When running the analyze or analyze-only goal, if property `maven.test.skip`=true, then test scoped dependencies should not be analyzed, but dependencies of all other scopes should still be analyzed.

The ignoreNonCompile parameter is not good enough, because provided and system scoped dependencies still need to be analyzed.

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**Affects:** 3.2.0

Start with the analyze and analyze-only goals and trace how the maven.test.skip property affects dependency-scope analysis. Compare that behavior with ignoreNonCompile, checking that test-scoped dependencies are skipped while provided, system, and other applicable scopes remain analyzed. Done means the requested scope distinction is implemented and covered by the relevant plugin tests.

Written by the indexing model from the issue text.