Fill the other values for DailyKeepaliveInfoReported

Store the number of requests and app uids on start keepalives. The
values are also stored in KeepaliveStats and can be recalculated from
KeepaliveStats when reset. Fill the DailyKeepaliveInfoReported proto
with these values.

Bug: 273451360
Test: atest FrameworksNetTests
(cherry picked from https://android-review.googlesource.com/q/commit:91adc204d846970e5817c244eeb1e0d62aed87cc)
Merged-In: Ifb9a0048896d31c8ea897cf14768e94dcfd3b010
Change-Id: Ifb9a0048896d31c8ea897cf14768e94dcfd3b010