Modifies the GET /users/<user_id>/observees endpoint to include
the observee's avatar url if avatar service is enabled on the
observee's account.
Fixes MBL-4840
Test Plan:
Create Student user in student account
Create Parent user in parent account
Add Student as an observee of parent by token
Enable avatars on student account
Add avatar to student
Ensure that the list observees endpoint returns student avatar
Add second student with avatar
Repeat test to ensure that both have correct avatar
Change-Id: I0076bbb7d45447632eb4e553829886af69618dc2
Reviewed-on: https://gerrit.instructure.com/64248
Tested-by: Jenkins
Reviewed-by: Brad Humphrey <brad@instructure.com>
QA-Review: Ben Kirato <benk@instructure.com>
Product-Review: Josh Orr <jgorr@instructure.com>
3d6c097ab8