Due to bug fix for CLOUDSTACK-2823, we added a fix in the KVM code, to retry
passCmdLine several times during system vm start.
Somehow, during the retry, passCmdLine(the patchviasocket.pl itself) is hanging
forever, thus blocking startcommand, even the vm is already started.
The possible fix:
passCmdLine should timeout in a few seconds, if timeout, we can
try the command again for several times.
- Yet anther KVM blocker: https://issues.apache.org/jira/browse/CL... Edison Su
