Increase the wait time before polling the connection state for the first
time.
Depending on the prior state of the modem, the first poll might still
return a connected state. The script then tries to establish a PDP
session, which subsequently fails as the modem by then is in scan state.
Increasing the wait-time to 3 seconds mitigates this from happening.
Signed-off-by: David Bauer <mail@david-bauer.net>
0bc2b2a780