New way to stop a main thread

Use the kill instead of raise a custom exception.
For some reason mcollective capture all exceptions
if one of node becames inaccessible.

Bug 1282065 closes because the problem condition was deleted.

Change-Id: Ia7b9ef9734883a470bea592c398359f75b807d45
Closes-Bug: #1283812
Closes-Bug: #1282065
Merge "New way to stop a main thread"