Issue with User Data script

[yourbuddyconner]

Hey! Thanks for the module, it's super useful!

I ran into a little issue here: https://github.com/Guimove/terraform-aws-bastion/blob/master/user_data.sh#L116

The AWS CLI Command can result in multiple objects being listed on the same line which breaks the subsequent while read line loop.

I fixed it locally by changing it to:
aws s3api list-objects --bucket BUCKET --prefix public-keys/ --region REGION --output text --query 'Contents[?Size>0].Key' | sed -e 'y/\\t/\\n/' | tr '\t' '\n' > ~/keys_retrieved_from_s3

Note the replacement of tab characters with newlines: tr '\t' '\n'

I'd be happy to contribute a PR if it helps.

[Guimove]

Hello @yourbuddyconner
Thanks for you complimentary, I'm happy to know that my module is used by someone 😄

This is normally already done by the sed -e 'y/\\t/\\n/'
The tr should be useless
When have tested are you sure that sed -e 'y/\\t/\\n/' was replaced by sed -e 'y/\t/\n/' (notice the \) ?