Should validate username when creating a VM

[aovechki]

win10, x64, Eclipse.Mars

Create new VM dialog allows to proceed when user enters "admin" as the username. Subsequently VM creation fails with an error that the admin username is not allowed. Would be better to validate user input prior to submission.

[andxu]

shall not allow

"administrator", "admin", "user", "user1", "test", "user2", "test1", "user3", "admin1", "1", "123", "a", "actuser", "adm", "admin2", "aspnet", "backup", "console", "david", "guest", "john", "owner", "root", "server", "sql", "support", "support_388945a0", "sys", "test2", "test3", "user4", "user5".

[andxu]

Category: "Validation in more scenarios"

[ivywei0125]

add validation rule for vm's username
https://learn.microsoft.com/en-us/rest/api/compute/virtual-machines/create-or-update?tabs=HTTP#osprofile