[CELEBORN-1258] Separate application auth and general metadata and add UserIdentifier to the master application meta #2420
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What changes were proposed in this pull request?
In this pr, we support to update the user identifier in application meta when initializing lifecycle manager.
To make it clear, we Separate application auth and general metadata.
Why are the changes needed?
to close CELEBORN-1285
Does this PR introduce any user-facing change?
No.
How was this patch tested?
UT.