Adopt a cleaner, simpler naming scheme for scripts

This change introduces a cleaner and simpler naming scheme for EventLogging
entry points. Each entry point is a role, and each role is condensed to a
single noun which describes its activity.

This change also drops 'eventlogging-udp-seqid-mon'.

Change-Id: I89921dfd5c22f70847641747ebc96e208d19f4f0
Merge "Adopt a cleaner, simpler naming scheme for scripts"