Handle config file not being found in both Python 2 and 3
Handle config file not being found in both Python 2 and 3

yugangw-msft/azure-cli,QingChenmsft/azure-cli,QingChenmsft/azure-cli,samedder/azure-cli,samedder/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,yugangw-msft/azure-cli,QingChenmsft/azure-cli,yugangw-msft/azure-cli,BurtBiel/azure-cli,samedder/azure-cli,QingChenmsft/azure-cli,samedder/azure-cli,BurtBiel/azure-cli,yugangw-msft/azure-cli