Increase timeout when polling for ICMP errors
Increase timeout when polling for ICMP errors

We're seeing occasional flakes in CQ in which the ICMP error isn't received in
time. Double the timeout from 1s to 2s.

PiperOrigin-RevId: 487035507

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor