don't include values for defaulted columns on insert
don't include values for defaulted columns on insert

test plan:
 * in script/console, create a new user
 * only set the name
 * save it
 * the insert sql should have a limited number of attributes
   (name, uuid, sortable_name, created_at, updated_at, workflow_state)

Change-Id: I0de90558efd288f47ce68bc5491affd365be18bb
Reviewed-on: https://gerrit.instructure.com/36513
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
QA-Review: August Thornton <9adc7a1161ddf32ff608de792a7e50179545f026@instructure.com>
Reviewed-by: Nick Cloward <9cc571ed222c7ca8c35f018ff48a612f8cadeb73@instructure.com>
Product-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>

whalejasmine/canvas-lms,sfu/canvas-lms,leftplusrightllc/canvas-lms,jay3126/canvas-lms,skmezanul/canvas-lms,HotChalk/canvas-lms,samuels410/greatlakes-lms,Jyaasa/canvas-lms,sfu/canvas-lms,narigone/canvas,dgynn/canvas-lms,eCNAP/CANVAS,Jyaasa/canvas-lms,utkarshx/canvas-lms,SwinburneOnline/canvas-lms,grahamb/canvas-lms,greyhwndz/canvas-lms,sfu/canvas-lms,tgroshon/canvas-lms,kyroskoh/canvas-lms,djbender/canvas-lms,snehakachroo1/LSI_replica,snehakachroo1/LSI_replica,sdeleon28/canvas-lms,Rvor/canvas-lms,eCNAP/CANVAS,fronteerio/canvas-lms,Jyaasa/canvas-lms,efrj/canvas-lms,leftplusrightllc/canvas-lms,venturehive/canvas-lms,ShreniiNepal/shrenii_lmp,jay3126/canvas-lms,snehakachroo1/LSI_replica,leftplusrightllc/canvas-lms,greyhwndz/canvas-lms,venturehive/canvas-lms,kyroskoh/canvas-lms,SwinburneOnline/canvas-lms,snehakachroo1/LSI_replica,efrj/canvas-lms,sfu/canvas-lms,narigone/canvas,dgynn/canvas-lms,instructure/canvas-lms,skmezanul/canvas-lms,sdeleon28/canvas-lms,instructure/canvas-lms,utkarshx/canvas-lms,tgroshon/canvas-lms,shidao-fm/canvas-lms,antoniuslin/canvas-lms,utkarshx/canvas-lms,greyhwndz/canvas-lms,jay3126/canvas-lms,redconfetti/canvas-lms,whalejasmine/canvas-lms,kyroskoh/canvas-lms,tgroshon/canvas-lms,roxolan/canvas-lms,sdeleon28/canvas-lms,shidao-fm/canvas-lms,matematikk-mooc/canvas-lms,Unow/canvas-lms,wrdsb/canvas-lms,eCNAP/CANVAS,wrdsb/canvas-lms,gbleydon/canvas-lms,leftplusrightllc/canvas-lms,instructure/canvas-lms,sdeleon28/canvas-lms,gbleydon/canvas-lms,gbleydon/canvas-lms,sfu/canvas-lms,juoni/canvas-lms,whalejasmine/canvas-lms,va7map/canvas-lms,antoniuslin/canvas-lms,shidao-fm/canvas-lms,juoni/canvas-lms,antoniuslin/canvas-lms,fronteerio/canvas-lms,efrj/canvas-lms,SwinburneOnline/canvas-lms,ShreniiNepal/shrenii_lmp,va7map/canvas-lms,greyhwndz/canvas-lms,va7map/canvas-lms,whalejasmine/canvas-lms,narigone/canvas,AndranikMarkosyan/lms,dgynn/canvas-lms,HotChalk/canvas-lms,Jyaasa/canvas-lms,jay3126/canvas-lms,va7map/canvas-lms,djbender/canvas-lms,juoni/canvas-lms,grahamb/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,instructure/canvas-lms,roxolan/canvas-lms,instructure/canvas-lms,efrj/canvas-lms,tgroshon/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,wye0220/shindig-canvas,SwinburneOnline/canvas-lms,venturehive/canvas-lms,AndranikMarkosyan/lms,kyroskoh/canvas-lms,fronteerio/canvas-lms,AndranikMarkosyan/lms,venturehive/canvas-lms,Unow/canvas-lms,wrdsb/canvas-lms,redconfetti/canvas-lms,sfu/canvas-lms,samuels410/greatlakes-lms,matematikk-mooc/canvas-lms,samuels410/greatlakes-lms,utkarshx/canvas-lms,roxolan/canvas-lms,antoniuslin/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,Unow/canvas-lms,eCNAP/CANVAS,roxolan/canvas-lms,wye0220/shindig-canvas,ShreniiNepal/shrenii_lmp,dgynn/canvas-lms,narigone/canvas,grahamb/canvas-lms,wrdsb/canvas-lms,ShreniiNepal/shrenii_lmp,Rvor/canvas-lms,AndranikMarkosyan/lms,HotChalk/canvas-lms,matematikk-mooc/canvas-lms,redconfetti/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,wye0220/shindig-canvas,skmezanul/canvas-lms,samuels410/greatlakes-lms,shidao-fm/canvas-lms,Rvor/canvas-lms,Rvor/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,skmezanul/canvas-lms,juoni/canvas-lms,HotChalk/canvas-lms