New get_child_pids function
New get_child_pids function

Change-Id: I3d5a19b27aa9a75265ad40fb3ca8f2e6ee7bd81c
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation