new columns available:
EVENT_TIMESTAMP: same as TIMESTAMP (the edr event timestamp),
but including formatting (fractional seconds + rounding)
exactly like cdr START_TIME/INIT_TIME/END_TIME
EVENT_TIMEZONE: the subscriber's inherited timezone
TIMESTAMP_LOCALIZED: the event's timestamp with the
subscriber's inherited timezone applied. same formatting
as EVENT_TIMESTAMP
Change-Id: Id63b92d111e1c5bdb36e9f710f1d464e9e7ed44c