Enlarge the onAvailable callback timeout to 30 seconds

Sometimes the device may take a long time to connect to the wifi,
try to enlarge the timeout to lower the fail rate of test.

Bug: 157391946
Test: atest CtsHostsideNetworkTests:com.android.cts.net.HostsideNetworkCallbackTests
Original-Change: https://android-review.googlesource.com/1324092
Merged-In: Ie89936ecc2d70ee22dd312067ccedd2523e81855
Change-Id: Ie89936ecc2d70ee22dd312067ccedd2523e81855
1 file changed
tree: 795405d2cd522303d5c47bfd61f04dc25e857ed7
  1. tests/