GH-119 Move log of every failed trx to transaction_failure_tracing lo…

…gger.

plugins/producer_plugin/producer_plugin.cpp

@@ -1975,7 +1975,7 @@ producer_plugin_impl::push_transaction( const fc::time_point& block_deadline,
          auto failure_code = trace->except->code();
          if( failure_code != tx_duplicate::code_value ) {
             // this failed our configured maximum transaction time, we don't want to replay it
-            fc_dlog( _log, "Failed ${c} trx, auth: ${a}, prev billed: ${p}us, ran: ${r}us, id: ${id}",
+            fc_dlog( _trx_failed_trace_log, "Failed ${c} trx, auth: ${a}, prev billed: ${p}us, ran: ${r}us, id: ${id}",
                      ("c", failure_code)("a", first_auth)("p", prev_billed_cpu_time_us)
                      ( "r", end - start )( "id", trx->id() ) );
             _account_fails.add( first_auth, failure_code );