autotest/autotest — pull request #633 by rbbratta (2013-04-22 01:21:53+00:00)
Title: logging_manager: Implement LoggingFile.isatty() for completeness, return False

yum-cli uses sys.stdout.isatty() in various places, so it will fail when
called from autotest since LoggingFile.isatty() does not exist.
Return False since LoggingFile is not emulating a tty.

Signed-off-by: Ross Brattain