Set expired_by to be three days from now, when querying rkp_pool_state.

When collecting metrics about RKP pool status, we currently query
the remote_provisioning module by setting expired_by = now.
But inside remote_provisioning module, all expired keys by now are
deleted before returning the pool status.
Therefore, in the metrics, we do not see the number of expiring keys
since it is always zero.

Test: statsd TestDrive script
Bug: 210162269
Ignore-AOSP-First: This will be merged to AOSP manually.
Change-Id: I7f7026b1297f297ce208b828b647f1056485128e
1 file changed