Evaluation delay = 8 secs for explicitly selected networks

When a network was explicitly selected, the user just tapped it and
is likely waiting for it to connect. A shorter timeout is therefore
more appropriate for these.

Bug: 281970908
Test: New test in ConnectivityServiceTest
Change-Id: I99a263960cbc9292868fc4bb46a4f3b2f3c71541
2 files changed