Update configuration and client agent string to point to alpha instead of beta

Author: mbohlool

kubernetes/client/api_client.py

@@ -75,7 +75,7 @@ def __init__(self, host=None, header_name=None, header_value=None,
             self.host = host
         self.cookie = cookie
         # Set default User-Agent.
-        self.user_agent = 'Swagger-Codegen/1.0.0-beta.1/python'
+        self.user_agent = 'Swagger-Codegen/1.0.0-alpha/python'
 
     @property
     def user_agent(self):

kubernetes/client/configuration.py

@@ -222,7 +222,7 @@ def to_debug_report(self):
                "OS: {env}\n"\
                "Python Version: {pyversion}\n"\
                "Version of the API: v1.5.1\n"\
-               "SDK Package Version: 1.0.0-beta.1".\
+               "SDK Package Version: 1.0.0-alpha".\
                format(env=sys.platform, pyversion=sys.version)