Add consumer_accept_list to apigee-x-instance

Fixes #701

tests/modules/apigee_x_instance/fixture/main.tf

@@ -25,4 +25,8 @@ module "apigee-x-instance" {
     "eval1",
     "eval2"
   ]
+  consumer_accept_list = [
+    "project1",
+    "project2"
+  ]
 }

tests/modules/apigee_x_instance/test_plan.py

@@ -28,17 +28,28 @@ def test_resource_count(resources):
 
 def test_instance_attachment(resources):
   "Test Apigee Instance Attachments."
-  attachments = [r['values'] for r in resources if r['type']
-                 == 'google_apigee_instance_attachment']
+  attachments = [
+      r['values']
+      for r in resources
+      if r['type'] == 'google_apigee_instance_attachment'
+  ]
   assert len(attachments) == 2
   assert set(a['environment'] for a in attachments) == set(['eval1', 'eval2'])
 
 
 def test_instance(resources):
   "Test Instance."
-  instances = [r['values'] for r in resources if r['type']
-               == 'google_apigee_instance']
+  instances = [
+      r['values'] for r in resources if r['type'] == 'google_apigee_instance'
+  ]
   assert len(instances) == 1
   assert instances[0]['ip_range'] == '10.0.0.0/22,10.1.0.0/28'
   assert instances[0]['name'] == 'my-test-instance'
   assert instances[0]['location'] == 'europe-west1'
+
+
+def test_instance_consumer_accept_list(resources):
+  instances = [
+      r['values'] for r in resources if r['type'] == 'google_apigee_instance'
+  ]
+  assert instances[0]['consumer_accept_list'] == ['project1', 'project2']