policies/hibp: update for flows, add unittests

passbook/policies/hibp/migrations/0002_haveibeenpwendpolicy_password_field.py

@@ -0,0 +1,21 @@
+# Generated by Django 3.0.8 on 2020-07-10 18:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("passbook_policies_hibp", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="haveibeenpwendpolicy",
+            name="password_field",
+            field=models.TextField(
+                default="password",
+                help_text="Field key to check, field keys defined in Prompt stages are available.",
+            ),
+        ),
+    ]