fix insert hash for force not to do a commit

ereuse_devicehub/resources/hash_reports.py

@@ -26,12 +26,15 @@ class ReportHash(db.Model):
     hash3.comment = """The normalized name of the hash."""
 
 
-def insert_hash(bfile):
+def insert_hash(bfile, commit=True):
     hash3 = hashlib.sha3_256(bfile).hexdigest()
     db_hash = ReportHash(hash3=hash3)
     db.session.add(db_hash)
-    db.session.commit()
-    db.session.flush()
+    if commit:
+        db.session.commit()
+        db.session.flush()
+
+    return hash3
 
 
 def verify_hash(bfile):