add a new field to the instance model for use with receptor changes (incoming)

awx/api/serializers.py

@@ -4799,6 +4799,7 @@ class InstanceSerializer(BaseSerializer):
             "mem_capacity",
             "enabled",
             "managed_by_policy",
+            "node_type",
         )
 
     def get_related(self, obj):

awx/main/migrations/0152_instance_node_type.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.2.20 on 2021-07-26 19:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0151_rename_managed_by_tower'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='instance',
+            name='node_type',
+            field=models.CharField(
+                choices=[('control', 'Control plane node'), ('execution', 'Execution plane node'), ('hybrid', 'Controller and execution')],
+                default='hybrid',
+                max_length=16,
+            ),
+        ),
+    ]

awx/main/models/ha.py

@@ -86,6 +86,8 @@ class Instance(HasPolicyEditsMixin, BaseModel):
         default=0,
         editable=False,
     )
+    NODE_TYPE_CHOICES = [("control", "Control plane node"), ("execution", "Execution plane node"), ("hybrid", "Controller and execution")]
+    node_type = models.CharField(default='hybrid', choices=NODE_TYPE_CHOICES, max_length=16)
 
     class Meta:
         app_label = 'main'