Add trigger type job for logging process starts

Also renaming some trigger type fields to be consistent.

Test: Manually after running:
m -j statsd_testdrive && statsd_testdrive 169

Bug: 242928495
Change-Id: I577f940bf09e3ce7b8da87496af413058f324455
Merged-In: I577f940bf09e3ce7b8da87496af413058f324455
(cherry picked from commit e6ab4d71)