Add configurable ssl options for the director nginx

- director.nginx.ssl_prefer_server_ciphers
- director.nginx.ssl_protocols
- director.nginx.ssl_ciphers
- New defaults dissallow SSLv3
- New defaults use ciphers from Mozilla's "modern" recommendation

[#80756396]

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Enable SSL for integration tests (director nginx)

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Bump bosh-agent to disable SSLv3 support (agent's micro server)

[#80756396]

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Fix broken integration test that assumed director was on http

[#80756396]

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Fix flakey email queue test

- Check for empty queue periodically, but timeout after 30 seconds
- Refactor test to use RSpec3 syntax

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Fix TLDv1 typo to TLSv1

[#80756396]

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Remove 'nil' default value for config_drive

Signed-off-by: Zachary Auerbach <zak@zaksoup.com>
Adding final release for build 2748