netutils/ntpclient: add 1 second delay on sendto() error handling
netutils/ntpclient: add 1 second delay on sendto() error handling

This patch adds 1 second delay when sendto() fails in ntpclient daemon
loop.

If ntpclient starts before ip address is assigned to network interface,
sendto() error log flood can occur. 1 second delay will prevent the
error log flood.

Change-Id: I69366005be9518a9cc38ad1028371ab3600c4d13
Signed-off-by: Wonsang Ryou <bc48fb2bc21aa3a9d3ccd13729d9fc0f5ca913dd@samsung.com>

JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT