101-vm-simple-linux is not deployable with ssh key

[101-vm-simple-linux](https://github.com/Azure/azure-quickstart-templates/tree/master/101-vm-simple-linux)

### Issue Details
The template is not usable with ssh key. When pasting in an SSH key in the "Admin Password or Key" field, it gives an error about password requirements.

### Repro steps
1. Open link to template above
2. Click on Deploy To Azure button
3. Select sshPublicKey for auth type
4. Paste in a public ssh key. ex. "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDy/w..."
5. Witness error

Start with the 101-vm-simple-linux template linked in the issue and reproduce the deployment through the Azure portal using sshPublicKey authentication. Check how the template handles the “Admin Password or Key” input and verify the result by deploying with a public SSH key. Done means the template accepts the key without reporting password requirements.

Written by the indexing model from the issue text.