Fix tests when sqs_extended_client is not installed

The try/except block was triggering when sqs_extended_client isn't installed, which results in boto being overwritten with None

Author: Amwam

kombu/asynchronous/aws/ext.py

@@ -4,14 +4,12 @@
 
 try:
     import boto3
-    import sqs_extended_client
     from botocore import exceptions
     from botocore.awsrequest import AWSRequest
     from botocore.httpsession import get_cert_path
     from botocore.response import get_response
 except ImportError:
     boto3 = None
-    sqs_extended_client = None
 
     class _void:
         pass
@@ -24,6 +22,11 @@ class BotoCoreError(Exception):
     get_response = _void()
     get_cert_path = _void()
 
+try:
+    import sqs_extended_client
+except ImportError:
+    sqs_extended_client = None
+
 
 __all__ = (
     'exceptions', 'AWSRequest', 'get_response', 'get_cert_path',

kombu/asynchronous/aws/sqs/ext.py

@@ -5,7 +5,10 @@
 
 try:
     import boto3
-    import sqs_extended_client
 except ImportError:
     boto3 = None
+
+try:
+    import sqs_extended_client
+except ImportError:
     sqs_extended_client = None