Add time and I/O info to last_install

One example of last_install is:

/sideload/package.zip
1
time_total: 101
bytes_written_system: 14574000
bytes_stashed_system: 100
bytes_written_vendor: 5107400
bytes_stashed_vendor: 0

Bug: 28658632
Change-Id: I4bf79ea71a609068d38fbce6b41bcb892524aa7a