[ASIM] Top-level parser consistency

[SpeedyFireCyclone]

Required items, please complete

Change(s):

• Add missing sub-parsers to top-level ProcessEvent & NetworkSession parsers

Reason for Change(s):

• While doing static analysis, we discovered missing parsers compared to what is supposed to be supported.

Version Updated:

• Yes

Testing Completed:

• No actual parser changes; Did not re-test the already-existing sub-parsers.