Fixing a few tests related to the new MOOSE IO infrastructure. Setup
MOOSEFileHandler.findAll to change the name of the File Entry to its
parent Blocks name if the Entry's current name is the general 'file' or
'data_file' to make the Entry more descriptive for the MOOSE user. 

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>