increase pdns timeout to 30sec
increase pdns timeout to 30sec

Ideally, pdns should keep on retrying connection to mysql.
However, that's not the current case. The maximum timeout
I have observed is ~10 seconds. To be safe, use 30sec. timeout
until mysql becomes ready

gs1oliot/oliot-ons-1.1,gs1oliot/oliot-ons-1.1,gs1oliot/oliot-ons-1.1