Add test case for reset group snapshot status

Reset group snapshot status is a new api implemented in v3 group snapshots,
min_microversion is 3.19. This patch adds test case for this new feature.

Including:

[1] Add reset group snapshot status api to v3 group_snapshots_client
[2] Add unit test for reset group snapshot status api
[3] Add test case: test_reset_group_snapshot_status
[4] Add release note

Change-Id: I14f5b8fd0f386ea5f84cc3a2decede430a7e7893
diff --git a/releasenotes/notes/add-reset-group-snapshot-status-api-to-v3-group-snapshots-client-248d41827daf2a0c.yaml b/releasenotes/notes/add-reset-group-snapshot-status-api-to-v3-group-snapshots-client-248d41827daf2a0c.yaml
new file mode 100644
index 0000000..76b395d
--- /dev/null
+++ b/releasenotes/notes/add-reset-group-snapshot-status-api-to-v3-group-snapshots-client-248d41827daf2a0c.yaml
@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Add reset group snapshot status API to v3 group_snapshots_client library,
+    min_microversion of this API is 3.19. This feature enables the possibility
+    to reset group snapshot status.