 Update Debian Jessie AMI to continue being able to use apt (#7003)
 Update Debian Jessie AMI to continue being able to use apt (#7003)

Fixes #6907.
stweil/letsencrypt,letsencrypt/letsencrypt,lmcro/letsencrypt,lmcro/letsencrypt,stweil/letsencrypt,letsencrypt/letsencrypt