Grab release version in setup.py from environment variable

Author: ajrice6713

setup.py

@@ -8,11 +8,11 @@
     Generated by: https://openapi-generator.tech
 """
 
-
+import os
 from setuptools import setup, find_packages  # noqa: H301
 
 NAME = "bandwidth-sdk"
-VERSION = "1.0.0"
+VERSION = os.environ['RELEASE_VERSION']
 # To install the library, run the following
 #
 # python setup.py install