Remote prompt matching: Add 'type Control-D'

When booting JeOS in single user mode, I get "type Control-D" instead of
the current match value "press Control-D". This patch allows for both
alternatives.

Signed-off-by: Jonas Eriksson <jonas.eriksson@enea.com>
Consistent pass/fail in logging and output

Test.run_once() can return False, indicating that a test case failed. In
this case, the log will still display "PASS", while the console output
is "FAIL". Solve this by checking the return status before printing
"PASS" or "FAIL".

Signed-off-by: Jonas Eriksson <jonas.eriksson@enea.com>
Merge pull request #1578 from zqad/fixes

Fixes to virt-test