Add libvirt get_console_output tests: pty and file
Add libvirt get_console_output tests: pty and file

Add two new libvirt tests for the get_console_output:
 - test_get_console_output_pty
 - test_get_console_output_file

Fixes LP Bug #990237.

Change-Id: I308862c131c4c9c9c4accab1822039f8f5a775b4

n0ano/ganttclient