Add service_email_reply_to DAO with an upsert method

app/dao/service_email_reply_to_dao.py

@@ -0,0 +1,32 @@
+from app import db
+from app.dao.dao_utils import transactional
+from app.models import ServiceEmailReplyTo
+
+
+def create_or_update_email_reply_to(service_id, email_address):
+    reply_to = dao_get_reply_to_by_service_id(service_id)
+    if reply_to:
+        reply_to.email_address = email_address
+        dao_update_reply_to_email(reply_to)
+    else:
+        reply_to = ServiceEmailReplyTo(service_id=service_id, email_address=email_address)
+        dao_create_reply_to_email_address(reply_to)
+
+
+@transactional
+def dao_create_reply_to_email_address(reply_to_email):
+    db.session.add(reply_to_email)
+
+
+def dao_get_reply_to_by_service_id(service_id):
+    reply_to = db.session.query(
+        ServiceEmailReplyTo
+    ).filter(
+        ServiceEmailReplyTo.service_id == service_id
+    ).first()
+    return reply_to
+
+
+@transactional
+def dao_update_reply_to_email(reply_to):
+    db.session.add(reply_to)