Implemented sleep for 3 seconds after AMI creation before adding tags
Implemented sleep for 3 seconds after AMI creation before adding tags

- The AWS API seems to not always return a resource that was just
created and since there is no synchronous API available for Golang
(that I’m aware of) we will cop out with a sleep for 3 seconds.

josh-padnick/ec2-snapper,josh-padnick/ec2-snapper,SivagnanamCiena/ec2-snapper