brianvans 801eddf5f8 Add ha_enabled for mysql backend (#5122)
* Slight cleanup around mysql ha lock implementation

* Removes some duplication around lock table naming
* Escapes lock table name with backticks to handle weird characters
* Lock table defaults to regular table name + "_lock"
* Drop lock table after tests run

* Add `ha_enabled` option for mysql storage

It defaults to false, and we gate a few things like creating the lock
table and preparing lock related statements on it
2018-08-16 11:03:16 -07:00
..
2017-08-09 10:32:03 -04:00
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