Provisioning: Add better nil check (#110847)

pkg/util/interface.go

@@ -0,0 +1,16 @@
+package util
+
+import "reflect"
+
+func IsInterfaceNil(i interface{}) bool {
+	iv := reflect.ValueOf(i)
+	if !iv.IsValid() {
+		return true
+	}
+	switch iv.Kind() {
+	case reflect.Ptr, reflect.Slice, reflect.Map, reflect.Func, reflect.Interface:
+		return iv.IsNil()
+	default:
+		return false
+	}
+}