server, session: refine mysql handshake error log (#15731) #15799
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cherry-pick #15731 to release-3.1
What problem does this PR solve?
Problem Summary:
now, we log out too many EOF log due to port health check
What is changed and how it works?
make handshake EOF error be logged as
INFOlevel(or debug?) and suspend stack info for themWhat's Changed:
How it Works:
log inside handshake method
Related changes
Check List
Tests
Side effects
Release note
refine mysql mysql handshake error log
This change is