Don't allow sub-blocks for SetNew.
Don't allow sub-blocks for SetNew.

You can't set individual items in lists, you can only set the list as a
whole, so we shouldn't allow sub-blocks to SetNew or SetNewComputed.

pdecat/terraform,drebes/terraform,youhong316/terraform,hashicorp/terraform,nlamirault/terraform,brandontosch/terraform,donaldguy/terraform,tommynsong/terraform,rnaveiras/terraform,pdecat/terraform,ewbankkit/terraform,mattray/terraform,apparentlymart/terraform,brandontosch/terraform,pdecat/terraform,youhong316/terraform,tpounds/terraform,luis-silva/terraform,kl4w/terraform,mattray/terraform,hashicorp/terraform,rnaveiras/terraform,heimweh/terraform,heimweh/terraform,VladRassokhin/terraform,iljaskevic/terraform,tpounds/terraform,brandontosch/terraform,drebes/terraform,heimweh/terraform,pradeepbhadani/terraform,pradeepbhadani/terraform,ewbankkit/terraform,mattray/terraform,hashicorp/terraform,apparentlymart/terraform,youhong316/terraform,rnaveiras/terraform,VladRassokhin/terraform,apparentlymart/terraform,apparentlymart/terraform,nlamirault/terraform,heimweh/terraform,luis-silva/terraform,ewbankkit/terraform,iljaskevic/terraform,kl4w/terraform,pryorda/terraform,tpounds/terraform,kl4w/terraform,gechr/terraform,donaldguy/terraform,donaldguy/terraform,luis-silva/terraform,tpounds/terraform,brandontosch/terraform,heimweh/terraform,VladRassokhin/terraform,apparentlymart/terraform,gechr/terraform,nlamirault/terraform,mattray/terraform,pdecat/terraform,drebes/terraform,tommynsong/terraform,tommynsong/terraform,drebes/terraform,iljaskevic/terraform,VladRassokhin/terraform,luis-silva/terraform,iljaskevic/terraform,pradeepbhadani/terraform,gechr/terraform,pryorda/terraform,pryorda/terraform,kl4w/terraform,ewbankkit/terraform,youhong316/terraform,donaldguy/terraform,brandontosch/terraform