Bug 1090299 - performance testing logging implementation for cold launch, memory, and reboot

Raptor is currently using the dotenv module to parse environment information from a `.env` file, which in my Gaia looks like this:

```
.env file
RAPTOR_LOG=raptor.log
RAPTOR_USERNAME=root
RAPTOR_PASSWORD=root
RAPTOR_DATABASE=raptor
RAPTOR_HOST=docker
RAPTOR_PORT=8086
```