don't validate MinItems with unknowns in a block
don't validate MinItems with unknowns in a block

If there are unknowns, the block may have come from a dynamic
declaration, and we can't validate MinItems. Once the blocks are
expanded, we will get the full config for validation without any unknown
values.

rnaveiras/terraform,pdecat/terraform,VladRassokhin/terraform,pradeepbhadani/terraform,VladRassokhin/terraform,brandontosch/terraform,rnaveiras/terraform,brandontosch/terraform,nlamirault/terraform,heimweh/terraform,hashicorp/terraform,rnaveiras/terraform,apparentlymart/terraform,hashicorp/terraform,ewbankkit/terraform,gechr/terraform,brandontosch/terraform,pdecat/terraform,tommynsong/terraform,heimweh/terraform,pryorda/terraform,ewbankkit/terraform,pdecat/terraform,pradeepbhadani/terraform,pdecat/terraform,pradeepbhadani/terraform,heimweh/terraform,heimweh/terraform,gechr/terraform,tommynsong/terraform,apparentlymart/terraform,pryorda/terraform,ewbankkit/terraform,apparentlymart/terraform,apparentlymart/terraform,tommynsong/terraform,heimweh/terraform,apparentlymart/terraform,nlamirault/terraform,ewbankkit/terraform,gechr/terraform,brandontosch/terraform,VladRassokhin/terraform,hashicorp/terraform,nlamirault/terraform,VladRassokhin/terraform,pryorda/terraform,brandontosch/terraform