Make sure we ensure indexex for Execution Queue model on each test setUp() run.
Make sure we ensure indexex for Execution Queue model on each test
setUp() run.

.reset() method drops the collection and deletes indexes and that breaks
other tests which run after that call.

NOTE: We want to ensure indexes as least as possible since it's a very
expensive operation.

By default we do it once per test file, doing it for every test method
in every test file would slow tests down at least 5-10x.

nzlosh/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2,nzlosh/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2