When the app launcher tool receives a request to execute through the -f option,
it waits for the creation of a socket in the launchpad-process-pool.
If the socket is not created yet, we call usleep() every 100ms and monitor.
The maximum timeout is 10 seconds.
Change-Id: I98b5e0dc704fe08ae6130d46d0057e3041f9d260
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>