Redure retries from 20 to 10

One iteration of ping failure itself causes enough delay.
Thus, It was seen that 20 retries itself was taking about ~5-6 mins
So no need to retry 20 times

Change-Id: I2d193f42d6bb31c049e8aa97ae83558e737be3ae
Merge "Redure retries from 20 to 10" into R2.0