Add the tests for ResolverStats

Add the test coverage for resolver stats. Also check and prune the
parameters in setResolverConfiguration() if they exceed the maximum
number predefined in params.h, and delete commented code.

Bug: 119694273
Test: system/netd/tests/runtests.sh passed

Change-Id: I265a2f03edd4fbc6df97270a782be5e639dfc5f8
diff --git a/server/NetdNativeService.h b/server/NetdNativeService.h
index 4b86f59..c03853a 100644
--- a/server/NetdNativeService.h
+++ b/server/NetdNativeService.h
@@ -107,8 +107,9 @@
             const std::vector<std::string>& tlsServers,
             const std::vector<std::string>& tlsFingerprints) override;
     binder::Status getResolverInfo(int32_t netId, std::vector<std::string>* servers,
-            std::vector<std::string>* domains, std::vector<int32_t>* params,
-            std::vector<int32_t>* stats) override;
+                                   std::vector<std::string>* tlsServers,
+                                   std::vector<std::string>* domains, std::vector<int32_t>* params,
+                                   std::vector<int32_t>* stats) override;
 
     binder::Status setIPv6AddrGenMode(const std::string& ifName, int32_t mode) override;