Example for adding "ipauserauthtype" to the "Modify Users" permission

[bleetube]

Closes #98

I'm quite new to FreeIPA so this example might be heretical. But I've attempted to digest the documentation for fulfilling this mokey requirement:

Create a user account and role in FreeIPA with the "Modify users and Reset passwords" privilege. This user account will be used by the mokey application to reset users passwords. The "Modify Users" permission also needs to have the "ipauserauthtype" enabled.

[aebruno]

@fosstube Thanks so much!