Temporarily hard-code bnd defaults

This work in a debug session but not in a Kepler installation.
Need to figure out what is going on. The error:

Error creating Bnd project descriptor file (bnd.bnd).
tried to access method
aQute.bnd.build.Workspace.getDefaults()LaQute/bnd/osgi/Processor;
from class bndtools.wizards.project.NewBndProjectWizard

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>