Load balancer needs input validation to prohibit reserved table names
Reserved table names aren't prohibited from being entered as a table name in load_balancer_pool_edit.php. At least <ssl> is prohibited, and can find others from our alias code input validation I believe. Using "ssl" as the name results in a relayd syntax error, and I'm sure similar for other reserved keywords, just don't have time for in depth testing at the moment.
Fix #3268 - avoid pf table names conflict:
. Create a list of reserved table names for the hardcoded ones
. Use this list to validate aliases and load balance pool names
. Check if alias names don't conflict with LB pool names and vice-versa