Description of problem:
Mock does no longer provide ttys required for openpty(3). This causes a
failure of the tests in %check of the mksh package.

Version-Release number of selected component (if applicable):
mock-1.1.8-1

How reproducible:
Everytime, just use mock-1.1.8-1 to rebuild a mksh package that does not
use './test.sh -v -C regress:no-ctty' in %check.

Actual results:
Build will never end and somewhen killed after 24 hours by the buildsys.

Expected results:
Working rebuild by providing ttys to satisfy openpty(3).

Additional info:
This should be an issue for other shells with test sections, too.

Running mock 1.1.12 locally, things worked locally. But Fedora buildsys
is running 1.1.8 because there was another pty problem with the current
version somehow...