fix(deploy): remove private source checkout from customer installer

s-migrations/000053_precise_client_access_rules.up.sql

@@ -0,0 +1,3 @@
+ALTER TABLE security_list_entries DROP CONSTRAINT security_list_entries_subject_type_check;
+ALTER TABLE security_list_entries ADD CONSTRAINT security_list_entries_subject_type_check
+  CHECK (subject_type IN ('ip','cidr','device','user','user_agent','client_name','client_version'));