Merge two HCL config files using hclwrite, save merged content into new file

Usage:
  hclmerge [flags]

Flags:
  -d, --dest string    file to save merged content (optional)
  -1, --file1 string   config file 1 (required)
  -2, --file2 string   config file 2 (required)
  -h, --help           help for hclmerge