fix(db): remove unique constraint from sub

we're seeing duplicate records in the output file
since we don't have access to the source data, and
a duplicate sub doesn't impact a user's ability
to verify, we can ignore duplicates

Author: thekaveman

eligibility_server/db/models.py

@@ -18,7 +18,7 @@ def __repr__(self):
 
 class User(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    sub = db.Column(db.String, unique=True, nullable=False)
+    sub = db.Column(db.String, unique=False, nullable=False)
     name = db.Column(db.String, unique=False, nullable=False)
     types = db.relationship("Eligibility", secondary=user_eligibility, lazy="subquery", backref=db.backref("users", lazy=True))