Updated dependency gems

- bumped bosh gems to 1.2807

Signed-off-by: Tyler Schultz <tschultz@pivotal.io>
Updated .gitignore to support named releases

Signed-off-by: Tyler Schultz <tschultz@pivotal.io>
Created new final release: bosh-aws-cpi-1

[#85130446]

Signed-off-by: Tyler Schultz <tschultz@pivotal.io>