neo4j 2.1.6

Updating neo4j from 2.1.5 to 2.1.6

Tested locally

Closes #34476.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
percona-toolkit 2.2.12

Bump percona toolkit to 2.2.12.

Closes #34477.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
percona-toolkit: update 2.2.12 bottle.