strip unknown values from the resource config
strip unknown values from the resource config

Computed values are now all added to the config value as unknowns. Strip
these out to match the legacy expatiations.

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