Add HostKeyCallback in AWS tests as well
Add HostKeyCallback in AWS tests as well

[#143434825]

Signed-off-by: Nick Mahoney <37df72260815dd7c7e09de5254fe02d7d2694eb5@pivotal.io>

niroyb/bosh-bootloader,niroyb/bosh-bootloader,pivotal-cf-experimental/bosh-bootloader,pivotal-cf-experimental/bosh-bootloader