Travis test stability

This PR will:

- clear the data before doing reindexAll
- reduce the amount of memory Cassandra is using
- not let redis write to disk every 10k writes
- truncate the necessary column families before reindexing lots of content
- fix up some before statements
- emit a tenantCreated event from the tenants API which the config api can hook into. I believe this one was the cause of the verify standard resource propagation test failure.
I don't want to make a big deal out of this, but I'm hesitant to over-document this. The code-to-comment ratio in this function is already 4:7 and the code is fairly clear about what's happening.