PLXCOMP-220: added toString() to SimpleResourceAttributes

Signed-off-by: Kristian Rosenvold <krosenvold@apache.org>
PLXCOMP-220: fixed silly mistake in dirMode overriding

Signed-off-by: Kristian Rosenvold <krosenvold@apache.org>
PLXCOMP-220: pushed down setDefaultAttributes() and setOverrideAttributes()

Signed-off-by: Kristian Rosenvold <krosenvold@apache.org>