default Future<Void> addReplicationPeerAsync(String peerId, ReplicationPeerConfig peerConfig)
    throws IOException {
    return addReplicationPeerAsync(peerId, peerConfig, true);
  }
Add a new replication peer but does not block and wait for it.
<p/>
You can use Future.get(long, TimeUnit) to wait on the operation to complete. It may throw
ExecutionException if there was an error while executing the operation or TimeoutException in
case the wait timeout was not long enough to allow the operation to complete.
@param peerId     a short name that identifies the peer
@param peerConfig configuration for the replication peer
@return the result of the async operation
@throws IOException IOException if a remote or network exception occurs
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java