For every peer expose through `getpeerinfo` RPC whether or not we selected them as HB peers, and whether or not they selected us as HB peers.

Suggestion by @gmaxwell.
{
    LOCK(cs_vNodes);
    for(CNode* pnode : vNodes) {
        if (id == pnode->GetId()) {
            pnode->fDisconnect = true;
            return true;
        }
    }
    return false;
}
void CConnman::RecordBytesRecv(uint64_t bytes)
{
    LOCK(cs_totalBytesRecv);
    nTotalBytesRecv += bytes;
}
void CConnman::RecordBytesSent(uint64_t bytes)
{
    LOCK(cs_totalBytesSent);
    nTotalBytesSent += bytes;
    uint64_t now = GetTime();
    if (nMaxOutboundCycleStartTime + nMaxOutboundTimeframe < now)
    {
        
        nMaxOutboundCycleStartTime = now;
        nMaxOutboundTotalBytesSentInCycle = 0;
    }
    
    nMaxOutboundTotalBytesSentInCycle += bytes;
}
void CConnman::SetMaxOutboundTarget(uint64_t limit)