Only renew/rebind valid prefixes at ReacquireState.

For prefixes that DHCP server cannot extend, client should stop trying
to send renew/rebind message to extend the lifetime for those prefixes,
for example, prefix with preferred/valid lifetime of 0 or prefix with
t1/t2 equals to valid lifetime, which indicates that server won't extend
the lifetime for these prefixes.

Bug: 260934173
Test: atest NetworkStackIntegraionTests
Change-Id: I8cefd3d6e8cd6dd75ef4785bbf280a8beb5083ad
3 files changed