Fixing ST start script

deployment.statistical.mm.json -> statistical.mm.production.json
see commit:
https://github.com/GPII/universal/commit/8d51f42ccb92dd94e06373a6833061f1c70cce57
Merge remote-tracking branch 'javihernandez/pilot-fix-ST-start-script' into pilot

* javihernandez/pilot-fix-ST-start-script:
  Fixing ST start script