map Function
The map function is no longer available. Prior to Terraform v0.12 it was
the only available syntax for writing a literal map inside an expression,
but Terraform v0.12 introduced a new first-class syntax.
To update an expression like map("a", "b", "c", "d"), write the following instead:
tomap({ a = "b" c = "d"})The { ... } braces construct an object value, and then the tomap function
then converts it to a map. For more information on the value types in the
Terraform language, see Type Constraints.