message: do not load deprecated pg_opt when database config was read
diff: @@ -690,8 +690,8 @@ inline bool JsonDeserializerImpl::loadInto(IrohadConfig &dest) {
  and getDictChild(ToriiTlsParams).loadInto(dest.torii_tls_params)
  and getDictChild(InterPeerTls).loadInto(dest.inter_peer_tls)
  and getDictChild(InternalPort).loadInto(dest.internal_port)
  - and getDictChild(PgOpt).loadInto(dest.pg_opt)
  and getDictChild(DbConfig).loadInto(dest.database_config)
  + and (dest.database_config or getDictChild(PgOpt).loadInto(dest.pg_opt))
  and getDictChild(MaxProposalSize).loadInto(dest.max_proposal_size)
  and getDictChild(ProposalDelay).loadInto(dest.proposal_delay)
  and getDictChild(VoteDelay).loadInto(dest.vote_delay)
  