Adds support for excludes parameter for arquive_file for the source code

[amandakarina]

Hey folks,

It would be good to module support the excludes parameter in arquive_file step.

From:

data "archive_file" "main" {
  type        = "zip"
  output_path = pathexpand("${var.source_directory}.zip")
  source_dir  = data.null_data_source.wait_for_files.outputs["source_dir"]
}

To:

data "archive_file" "main" {
  type        = "zip"
  output_path = pathexpand("${var.source_directory}.zip")
  source_dir  = data.null_data_source.wait_for_files.outputs["source_dir"]
  excludes     = var.files_to_exclude_in_source_dir
}