scaling: ensure min and max int64s are in toplevel of block.

jobspec/parse_group.go

@@ -337,6 +337,8 @@ func parseScalingPolicy(out **api.ScalingPolicy, list *ast.ObjectList) error {
 	}
 
 	valid := []string{
+		"min",
+		"max",
 		"policy",
 		"enabled",
 	}

nomad/structs/funcs.go

@@ -267,6 +267,8 @@ func CopyScalingPolicy(p *ScalingPolicy) *ScalingPolicy {
 		ID:          p.ID,
 		Policy:      opaquePolicyConfig.(map[string]interface{}),
 		Enabled:     p.Enabled,
+		Min:         p.Min,
+		Max:         p.Max,
 		CreateIndex: p.CreateIndex,
 		ModifyIndex: p.ModifyIndex,
 	}