Update dev/nats-tls.yml
Update dev/nats-tls.yml

- nats job uses gnatsd package
- add cert,key & ca to nats properties

[#139316183](https://www.pivotaltracker.com/story/show/139316183)

Signed-off-by: Sameer Vohra <331d3c3021287f48dfcf7707b8699b9bcecefef1@pivotal.io>

jaimegag/kubo-deployment,pivotal-cf-experimental/kubo-deployment,pivotal-cf-experimental/kubo-deployment,jaimegag/kubo-deployment