Fix cifriendly-profile-bug

[ciis0]

Supersedes #114
Fixes #103

[ciis0]

So, I getLog().info(...)-debugged some things and found that the issue arises in the following line:

flatten-maven-plugin/src/main/java/org/codehaus/mojo/flatten/FlattenMojo.java

Line 605 in 16516a9

Model originalModel = this.project.getOriginalModel().clone();

This "original model" already has some properties interpolated, for example ${basedir}, which is the original error that arose in the context I experienced this bug.

Therefore #getOriginalModel() does not seem to be suited for CI-friendly interpolation.

For cifriendlies, the following line might needs to work on a raw POM (FlattenMojo#getRawPom of #114), not originalModel:

flatten-maven-plugin/src/main/java/org/codehaus/mojo/flatten/FlattenMojo.java

Lines 607 to 608 in 16516a9

	return this.modelCiFriendlyInterpolator.interpolateModel( originalModel, this.project.getModel().getProjectDirectory(),
	buildingRequest, problems );