test(ec2): prevent failing ssh key re-upload on ec2 integration tests

Author: a-dubs

tests/integration_tests/test_public_api.py

@@ -24,11 +24,15 @@ def cloud(request):
         tag="pycl-test", timestamp_suffix=True
     ) as cloud_instance:
         if isinstance(cloud_instance, pycloudlib.EC2):
-            cloud_instance.upload_key(
-                public_key_path=cloud_instance.config["public_key_path"],
-                private_key_path=cloud_instance.config["private_key_path"],
-                name=cloud_instance.tag,
-            )
+            # if key has already been uploaded, skip uploading it again.
+            # this is because the cloud instance is shared between tests and
+            # so the cloud does not clean up and remove the key between tests
+            if cloud_instance.tag not in cloud_instance.list_keys():
+                cloud_instance.upload_key(
+                    public_key_path=cloud_instance.config["public_key_path"],
+                    private_key_path=cloud_instance.config["private_key_path"],
+                    name=cloud_instance.tag,
+                )
 
         yield cloud_instance