Configure the maven wisdom plugin IT test coverage to be appended to the unit test coverage

Because Sonar computes the technical debt on the unit test coverage only.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Reduce the complexity of some if statements in the bundle packager.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>