Add ability to pass in a config string for FRROs

This enables passing them and and storing them in the .frro file but no
further.

Bug: 243066074
Test: Manual
Change-Id: I5c9723e69d175a536f9739619c6b6bf3162a5027
diff --git a/cmds/idmap2/idmap2d/Idmap2Service.cpp b/cmds/idmap2/idmap2d/Idmap2Service.cpp
index 073d987..083bbf01 100644
--- a/cmds/idmap2/idmap2d/Idmap2Service.cpp
+++ b/cmds/idmap2/idmap2d/Idmap2Service.cpp
@@ -235,9 +235,11 @@
 
   for (const auto& res : overlay.entries) {
     if (res.dataType == Res_value::TYPE_STRING) {
-      builder.SetResourceValue(res.resourceName, res.dataType, res.stringData.value());
+      builder.SetResourceValue(res.resourceName, res.dataType, res.stringData.value(),
+            res.configuration.value_or(std::string()));
     } else {
-      builder.SetResourceValue(res.resourceName, res.dataType, res.data);
+      builder.SetResourceValue(res.resourceName, res.dataType, res.data,
+            res.configuration.value_or(std::string()));
     }
   }