Roopa Prabhu 3e95a3dab5 Use closefds=True and shell=True when executing usercmds ...

Ticket: CM-1438
Reviewed By: reported by purna
Testing Done: Tested with purna's l2 l3 lag test

problem fixed by this patch:
In some cases the child processes executing user cmds seem to hold on to
the lock file fd for a lil longer, preventing another instance of
ifupdown from running immediately after. Seen with two immediate
instances of service networking restarts from scripts when the
interfaces file has many user cmds.

2014-06-01 12:17:40 -07:00

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