Export metric for total ETH RPC count (#528)

* Export metric for total ETH RPC count by methods

* Fix endpoint switch on max retries of new block

* Upgrade package versions

packages/graph-node/test/utils/indexer.ts

@@ -95,6 +95,10 @@ export class Indexer implements IndexerInterface {
     return undefined;
   }
 
+  async getBlockByHash (blockHash?: string): Promise<{ block: any }> {
+    return { block: undefined };
+  }
+
   async getBlocksAtHeight (height: number, isPruned: boolean): Promise<BlockProgressInterface[]> {
     assert(height);
     assert(isPruned);