Rewritten code to Python 3

- Docker baseimage change to alpine
- bumped all deps
- skip testing till py36 is available in CI

Change-Id: I7b0ca2b28e2c639645ea07e2b3adb21b857b2fe5
Related-PROD: PRODX-11711
Related-PROD: PRODX-14584
diff --git a/LICENSE b/LICENSE
index e0c50e4..4d35925 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-  Copyright (c) 2018 Mirantis et al.
+  Copyright (c) 2021 Mirantis et al.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.