[#197] upgrade the table networks

lib/Ravada.pm

@@ -226,6 +226,7 @@ sub _upgrade_tables {
     $self->_upgrade_table('iso_images','md5_url','varchar(255)');
     $self->_upgrade_table('iso_images','file_re','char(64)');
     $self->_upgrade_table('iso_images','device','varchar(255)');
+    $self->_upgrade_table('networks','requires_password','int(11)');
 }