Unable to Update User due to missing 'If-Match' Header

[Dray56]

According to the docs, updating a user requires the 'If-Match' Header. But according to the current implementation, this header is not being added and therefore update user is failing.

{"error_description":"Missing If-Match for PUT","error":"scim","message":"Missing If-Match for PUT"}

Solution would be to add this header for the put calls for users and groups