Resolve "Unit-tests with profiles fail to launch"

What does this MR do?

This fixes the launch of unit-tests that rely on bundles loading.

The variable fwCppUnitTest_BUNDLE was no longer defined because we removed CPPUNIT_OPTIONS parsing. Instead of using this mechanism, I propose to test if the profile.xml exists.

Closes #194 (closed)

How to test it?

Launch all unit-tests.