Developer environment setup may need some tweaks

[nmaludy]

I'm not sure exactly of the specifics but i tried following the documentation for "setting up a developer environment" here: https://docs.stackstorm.com/development/index.html#setting-up-a-development-environment

This basically states that i need to use st2vargrant or "one liner" install.

With this default install i was not able to run the unit tests because MongoDB had authorization enabled. Disabling authorization allowed me to start running unit tests.

Not sure if there are other steps that need to be followed above and beyond the "one liner" install phase?