Collect update_engine logs in dumpstate

The update_engine logs before reboot maybe useful to debug the OTA
failures.

Bug: 78201703
Test: Capture a bugreport and check the entries.
Change-Id: I3a7a48e524adf338c4a9f9525c98f9703e220100
(cherry picked from commit 75d53363bd1a3826d9673bc6617cd17b247e0f50)
1 file changed