Add unit tests to check synchronization of KnownFormats and gRPC

src/ripple/protocol/KnownFormats.h

@@ -130,6 +130,19 @@ public:
         return itr->second;
     }
 
+    // begin() and end() are provided for testing purposes.
+    typename std::forward_list<Item>::const_iterator
+    begin() const
+    {
+        return formats_.begin();
+    }
+
+    typename std::forward_list<Item>::const_iterator
+    end() const
+    {
+        return formats_.end();
+    }
+
 protected:
     /** Retrieve a format based on its name.
      */

src/ripple/protocol/impl/InnerObjectFormats.cpp

@@ -37,6 +37,20 @@ InnerObjectFormats::InnerObjectFormats()
             {sfSigningPubKey, soeREQUIRED},
             {sfTxnSignature, soeREQUIRED},
         });
+
+    add(sfMajority.jsonName.c_str(),
+        sfMajority.getCode(),
+        {
+            {sfAmendment, soeREQUIRED},
+            {sfCloseTime, soeREQUIRED},
+        });
+
+    add(sfDisabledValidator.jsonName.c_str(),
+        sfDisabledValidator.getCode(),
+        {
+            {sfPublicKey, soeREQUIRED},
+            {sfFirstLedgerSequence, soeREQUIRED},
+        });
 }
 
 InnerObjectFormats const&