Add Exception Blame, Kind, and Safety to schema.thrift
Add Exception Blame, Kind, and Safety to schema.thrift

Summary: add missing exception qualifiers to the schema.thrift

Reviewed By: AkramaMirza

Differential Revision: D38067547

fbshipit-source-id: eb9e6b7cb24740e8f4a7fe45ed15a791b6b7b610

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