Optimize PortMAC query

* We meant well but it turns out that the array unnest and join is
  actually very slow, as the join arguments do not get pushed down
  into the CTE (in Postgres 9/10 at least, later versions remove some
  of the optimization barriers in that specifc type of query)
* This caused a seq scan on both device and device_port, and the query
  is executed many times during macsuck
* The query is now rewritten to use ANY (macaddr[]) and without CTE,
  which seems to be around 20x faster

lib/App/Netdisco/Util/PortMAC.pm

@@ -37,7 +37,7 @@ sub get_port_macs {
 
     my $macs
         = schema('netdisco')->resultset('Virtual::PortMacs')->search({},
-        { bind => [$bindarray], select => [ 'mac', 'ip' ], group_by => [ 'mac', 'ip' ] } );
+        { bind => [$bindarray, $bindarray], select => [ 'mac', 'ip' ], group_by => [ 'mac', 'ip' ] } );
     my $cursor = $macs->cursor;
     while ( my @vals = $cursor->next ) {
         $port_macs->{ $vals[0] } = $vals[1];