dpm : add ability to send signal to child process

-dpm need access to send signal to child process
while installing iptable rules with specific timeout.

CRs-Fixed: 2354745
Change-Id: I072f0a2d99dc5563b56815c25c6b7edb2e764175
1 file changed
tree: c5efab1717fdb9bec62c676341411533df7d0e98
  1. generic/
  2. legacy/
  3. qva/
  4. Android.mk