Fix: fixed required items for a Terraform ComponentDefinition (#3257)

If a Terraform variable is required, the item in OpenAPI schema
is required.

Signed-off-by: Zheng Xi Zhou <zzxwill@gmail.com>

pkg/controller/utils/capability.go

@@ -194,7 +194,9 @@ func GetOpenAPISchemaFromTerraformComponentDefinition(configuration string) ([]b
 			}
 		}
 		schema.Title = k
-		required = append(required, k)
+		if v.Required {
+			required = append(required, k)
+		}
 		if v.Default != nil {
 			schema.Default = v.Default
 		}

pkg/controller/utils/capability_test.go

@@ -317,7 +317,7 @@ variable "mapVar" {
   type = "map"
 }`,
 			want: want{
-				subStr: "account_name",
+				subStr: `"required":["intVar","boolVar","listVar","mapVar"]`,
 				err:    nil,
 			},
 		},