[MDEP-770] Integration test can not be run in parallel

**[Slawomir Jaranowski](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=slawekjaranowski)** opened **[MDEP-770](https://issues.apache.org/jira/browse/MDEP-770?redirect=false)** and commented

Those test:

```java
src/it/projects/get-artifact
src/it/projects/get-artifact-maven-plugin
src/it/projects/get-artifact-no-transitive
src/it/projects/get-gav
src/it/projects/analyze-testDependencyWithNonTestScope
```

operate on the same tests artifacts.

During test prepare artifacts are deleted from local repository and after test execute - assertion checks if artifact was downloaded ...

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**Issue Links:**
- [MDEP-767](https://issues.apache.org/jira/browse/MDEP-767) Unique names of IT test artifacts

Start by inspecting the five integration-test projects under src/it/projects: get-artifact, get-artifact-maven-plugin, get-artifact-no-transitive, get-gav, and analyze-testDependencyWithNonTestScope. Run these integration tests in parallel and observe the shared local-repository artifacts during preparation and execution. Done means the tests can run concurrently without interfering with each other or failing artifact-download assertions.

Written by the indexing model from the issue text.