Downgrade version from 21.0.0b2 to 21.0.0b1

Author: jumpinthefire

src/aks-preview/setup.py

@@ -9,7 +9,7 @@
 
 from setuptools import find_packages, setup
 
-VERSION = "21.0.0b2"
+VERSION = "21.0.0b1"
 
 CLASSIFIERS = [
     "Development Status :: 4 - Beta",