Fix ansible-test tar format handling.

changelogs/fragments/ansible-test-remote-tar-format.yml

@@ -0,0 +1,2 @@
+bugfixes:
+    - ansible-test now uses GNU tar format instead of the Python default when creating payloads for remote systems

test/lib/ansible_test/_internal/payload.py

@@ -97,7 +97,7 @@ def create_payload(args, dst_path):  # type: (CommonConfig, str) -> None
 
     start = time.time()
 
-    with tarfile.TarFile.gzopen(dst_path, mode='w', compresslevel=4) as tar:
+    with tarfile.TarFile.open(dst_path, mode='w:gz', compresslevel=4, format=tarfile.GNU_FORMAT) as tar:
         for src, dst in files:
             display.info('%s -> %s' % (src, dst), verbosity=4)
             tar.add(src, dst, filter=filters.get(dst))