Update v1_customer_setup.md
Update v1_customer_setup.md

Set ExtIp value to INTERNAL.AZURE.IP.ADRESS
kunzimariano/IntegrationStream,JogoShugh/CommitStream.Web,kunzimariano/IntegrationStream,openAgile/CommitStream.Web,openAgile/CommitStream.Web,kunzimariano/IntegrationStream,openAgile/CommitStream.Web,JogoShugh/CommitStream.Web,JogoShugh/CommitStream.Web,kunzimariano/IntegrationStream,JogoShugh/CommitStream.Web,openAgile/CommitStream.Web