Agents arent provided API key by default

[0xtavian]

The ansible workload should add the APIs keys to every agent. This prevents having to manually login to all agents to add them yourself.

[derpadoo]

@0xtavian Let me know how it works for you.

1. Update the branch

git clone https://github.com/rackerlabs/scantron.git
git checkout issue-39-prefill-agent-api-key

2. Switch utilize_static_api_token_across_agents to True in scantron/ansible-playbooks/group_vars/all
3. Run the master playbook first (I need to update README info), so the API key can be generated. It dumps it to group_vars/static_api_key, so make sure that file is created.
4. Run the agent playbook, which fills an agent_config.json.j2 template with the API key found in group_vars/static_api_key.

[derpadoo]

Added logic to randomize the user_agent in agent_config.json to avoid scan agent name collisions. So now, you'd never need to log into the agents to update anything. You'd still have to add the user on Master though since that's how scheduled scans are filtered. Does that seem reasonable?

[derpadoo]

https://github.com/rackerlabs/scantron/tree/issue-39-prefill-agent-api-key merged into master