Fix a bug in autotest.py that directly raise a string for error

As suggested by John, use existing exception module AutoservInstallError
to raise the error message.

Signed-off-by: Yolkfull Chow <yzhou@redhat.com>


git-svn-id: http://test.kernel.org/svn/autotest/trunk@4003 592f7852-d20e-0410-864c-8624ca9c26a4
1 file changed