AthenaConfiguration: python code style and Python3 fixes
- use lazy string formatting in logging calls
log.debug('Hello %s', 'world')
instead oflog.debug('Hello %s' % 'world')
- indent and whitespace fixes
- some Python3 fixes
- remove
print
statements
log.debug('Hello %s', 'world')
instead of log.debug('Hello %s' % 'world')
print
statements