Removed old vagrant dep
Set apt-get commands to use DEBIAN_FRONTEND=noninteractive
Added shell flag to set to check state of commands first before executing
Fixed specs that weren't running/passing due to lack of _spec.rb
Remote FSOs can now check their status before acting
Added #installed_versions for brew pkg type
Brew packages can check their state before acting on #install
Brew packages can check their state before acting on #remove