Symptoms
I am attempting to integrate with AAD for additional logins (per http://help.k2.com/onlinehelp/k2blackpearl/icg/4.7/default.htm#configure/sf/multiauthaad.htm) I have done this in the past in our 4.6.9 (dev and prod) environments with no problem. When doing it in our new 4.7 dev server (fresh installation), there is no Azure Active Directory oauth resource type as stated in the instructions (Step 3, item 4).
Diagnoses
The Microsoft Online resource type can be used now. Also, the following KB article explains how to create your own Azure Active Directory resource type: http://help.k2.com/kb001636
Resolution
The issue was resolved by using the Microsoft Online resource type.
On KB Article