[patch lnst] Task: add fail_expected boolean arg

[Jiri Pirko]

From: Jiri Pirko <jiri(a)mellanox.com&gt;

Similar to "expected". But that for some odd reason does not accept
bool, but rather "pass" of "fail".

Signed-off-by: Jiri Pirko <jiri(a)mellanox.com&gt;
---
 lnst/Controller/Task.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lnst/Controller/Task.py b/lnst/Controller/Task.py
index 48aa0fe..7f9dc8e 100644
--- a/lnst/Controller/Task.py
+++ b/lnst/Controller/Task.py
@@ -236,6 +236,8 @@ class HostAPI(object):
                     raise TaskError(msg)
 
                 cmd["expect"] = argval == "pass"
+            elif arg == "fail_expected":
+                cmd["expect"] = not argval
             elif arg == "timeout":
                 try:
                     cmd["timeout"] = int(argval)
-- 
2.4.3