Save state of cloud before running tempest

This patch provides an option to the user to save the state of
cloud before running tempest.

Change-Id: I53d62cc7863bce3adf5201c6db162a4b5989e3a3
Closes-bug: 1671426
diff --git a/releasenotes/notes/add-save-state-option-5ea67858cbaca969.yaml b/releasenotes/notes/add-save-state-option-5ea67858cbaca969.yaml
new file mode 100644
index 0000000..8fdf4f0
--- /dev/null
+++ b/releasenotes/notes/add-save-state-option-5ea67858cbaca969.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Add --save-state option to allow saving state of cloud before tempest run.