Merge pull request #2861 from ogail/profile

Removing Environments from AzureSession
Merge pull request #2863 from stankovski/refactoring

Implemented support for multiple users and fixed broken tests
Fix setting default subscription
Merge pull request #2864 from ogail/profile

Fix setting default subscription
Updated AddAccount and ListSubscriptions workflows
Merge branch 'refactoring' of https://github.com/Azure/azure-sdk-tools into refactoring
Work in progress on Account refactoring