Update shared-libs/user-management to accept an oidc_provider property for users

[jkuester]

• The oidc_provider property should be set instead of password or token_login. Cannot set both.
• Validate that the value provided for oidc_provider matches the oidc_provider.client_id from the app_settings.
• Set a random value for the password of the user.
• This will affect user create/update via the /api/v2/users API
• Update integration tests

[mrjones-plip]

@rmayore - I don't think I can assign you this ticket until you comment on the ticket? Please comment "I'll take this!" or something and I think I can assign it to you then.

[rmayore]

Assign to me please @mrjones-plip

[mrjones-plip]

Perfect - you commenting enabled me to assign - thanks Robert!