ClasspathWorkspaceReader does not support "Maven CI Friendly Versions" (e.g. ${revision})

Maven 3.5.0 introduced Maven CI Friendly Versions.

A version element with such a setup can look like this:

<version>${revision}</version>

Via debugging I found out that ClasspathWorkspaceReader will never be able to match a given artifact (which contains the interpolated, final version) with the respective workspace/classpath entry because in ClasspathWorkspaceReader.createFoundArtifact(File) it just loads the XML document, without any interpolation or even parent lookup.

This issuse is very similar to SHRINKRES-223. Nevertheless, I saw/see two reasons for a separate issue:

• I am not sure that the setup in SHRINKRES-223 is even officially supported by Maven (in contrast to "CI Friendly Versions")
• I will come up with a PR that re-uses .flattened-pom.xml (created by flatten-maven-plugin, see "Install / Deploy" part on the "CI Friendly Versions" page) and that will be of no use for SHRINKRES-223