tracker script to bulk add new users to trackers

Basically, this is how it works:

1.Populate the projects_OSS.yml file with yaml for each team where name is literally the tracker project name and id is the 7 digit ID from the url. Each entry is a two line addition like this:

- name: CF Infrastructure (Public)
  id: 1488988

2.Populate the team_GSS.yml file with yaml for each user where role is the role you want to assign in tracker {owner | member | viewer} and the other fields are those you would otherwise use to populate the account creation form. Each entry is a two line addition like this:

team:
- name: Dan Smith
  initials: ds
  email: dsmith@pivotal.io
  role: member

3. run the executable in bin.zip