List dependencies for services - add integration test to verify

moto/ec2/models.py

@@ -27,7 +27,7 @@ from moto.core.utils import (
     iso_8601_datetime_with_milliseconds,
     camelcase_to_underscores,
 )
-from moto.iam.models import ACCOUNT_ID
+from moto.core import ACCOUNT_ID
 from .exceptions import (
     CidrLimitExceeded,
     DependencyViolationError,

moto/ec2/utils.py

@@ -11,7 +11,7 @@ from cryptography.hazmat.primitives import serialization
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.asymmetric import rsa
 
-from moto.iam.models import ACCOUNT_ID
+from moto.core import ACCOUNT_ID
 
 EC2_RESOURCE_TO_PREFIX = {
     "customer-gateway": "cgw",