avoid triggers for `mysqldump` during lane sync

[lgedgar]

i have some triggers in my Office 'op' DB but sync was adding them to the lane DB, in a broken state which caused further problems.

whether or not triggers should be included, could be configurable if needed but my guess is nobody else needs triggers included?

[gohanman]

Seems reasonable. If someone ever needs triggers transferred, they can add a custom sync routine that does that.