[tests] Fix slamengine-config
[tests] Fix slamengine-config

Looks like this file got accidentally changed in
https://github.com/slamdata/slamdata/commit/81bbbea5ccd1fc5ec889b1382432a63579978e32#commitcomment-12790675

This commit restores the correct contents of this file. We mount the
database from inside the tests, so we do not want this to be in the
configuration.

sellout/slamdata,sellout/slamdata,natefaubion/slamdata,cryogenian/slamdata,shujuwen2013/slamdata,jonsterling/slamdata,zeeiyerWork/slamdata,natefaubion/slamdata,drostron/slamdata,natefaubion/slamdata,mossprescott/slamdata,mossprescott/slamdata,zeeiyerWork/slamdata,cryogenian/slamdata,shujuwen2013/slamdata,beckyconning/slamdata,beckyconning/slamdata,jonsterling/slamdata,drostron/slamdata