Add a flag to disable getBlobs (#7853)

N/A


  Add a flag to disable get blobs. I configured the flag to disable it regardless of version because its most likely something we use for testing anyway.

beacon_node/network/src/network_beacon_processor/mod.rs

@@ -751,6 +751,9 @@ impl<T: BeaconChainTypes> NetworkBeaconProcessor<T> {
         block_root: Hash256,
         publish_blobs: bool,
     ) {
+        if self.chain.config.disable_get_blobs {
+            return;
+        }
         let epoch = block.slot().epoch(T::EthSpec::slots_per_epoch());
         let custody_columns = self.chain.sampling_columns_for_epoch(epoch);
         let self_cloned = self.clone();