Use strings.Trim instead of strings.Replace

[wata727]

Fixes #157

Problem

If there is access to a map element using a key as module attributes, an evaluation error occurred.

The string obtained from the token contains unnecessary double quotes. Therefore, it deletes this, but until now it deletes even the necessary double quotes.

"\"${var.ami_info}\"" => "${var.ami_info}"

"\"${var.amis[\"test1\"]}\" => "${var.amis[test1]}" # Oops!

Solution

Remove all leading and trailing double quotes. In other words, use strings.Trim instead of strings.Replace.