Ability to set guest's timezone

[fgrehm]

I always forget how to do that without human interaction with bash and I worked on a few legacy projects that required the timezone to be set to a specific one in order for tests to pass, it one less thing that I'll do with bash :-)

Something like this should do the trick:

config.vm.provision :ventriloquist do |env|
  env.timezone = 'Locality/Region' # Ex: 'America/Sao_Paulo'
end

This and this might be worth looking at