adding inputs output struct based on argo naming for now

models/common/models/inoutputs.go

@@ -8,14 +8,10 @@ type Artifact struct {
 
 type Param struct {
 	Attr     string `json:"attr" bson:"attr" validate:"required"`
+	Value    string `json:"value,omitempty" bson:"value,omitempty"`
 	Readonly bool   `json:"readonly" bson:"readonly" default:"true"`
 }
 
-type ParamValue struct {
-	Param
-	Value string `json:"value" bson:"value" validate:"required"`
-}
-
 type InOutputs struct {
 	Params    []Param    `json:"parameters" bson:"parameters"`
 	Artifacts []Artifact `json:"artifacts" bson:"artifacts"`