Replace dash with underscore

[afstam]

We find that dashes in account names cause issues with Linux and would like to replace them with underscores.

[MayeulRousselet]

Hi,

Thanks for the PR, could please give us more detail about the error you encounter on linux?

Thx,

Mayeul

[viopl]

Hi Mayeul and colleagues,

As we use user isolation framework, we run a shell script to create the synchronized users on Linux.
That's where we get problems - Linux does not allow hyphens in user names.
We have already a few users with hyphens in the email (e.g. [email protected] currently would result in user Ted.Hassen-Woodpecker_organisation.com).
In that case our shell script crashes, making it impossible to properly impersonate such users.

Best regards,
Viorel Pluta