Description of problem:
configchannel.createOrUpdatePath doesn't allow creation of binary files.  It allows you to pass a base64 encoded string, but doesn't mark it as binary.  The file is stored as a text file with the contents being the base64 encoded string.

Version-Release number of selected component (if applicable):
Satellite 5.3.0

How reproducible:
Always

Steps to Reproduce:
1. in Python: contents = open('/bin/sleep', 'rb').read().encode('base64')
2. set the 'contents' in the data structure and call configchannel.createOrUpdatePath()
  
Actual results:
Satellite doesn't recognize base64 encoded contents and marks the file as text in the configuration channel

Expected results:
Satellite should notice the base64 encoded string and mark the file as binary in the configuration channel

Additional info: