Fix ansible ftdetect

scripts/test

@@ -2,10 +2,12 @@
 
 set -e
 
-vim --clean -N -u <(
-  echo "filetype plugin indent on"
-  echo "syntax enable"
-  echo "let &rtp='$PWD,'.&rtp"
-  echo "source scripts/test_filetypes.vim"
-  echo "exec ':q!'"
-)
+vim --clean -N --cmd "
+  filetype plugin indent on
+  syntax enable
+  let &rtp='$PWD,'.&rtp
+  source ftdetect/polyglot.vim
+  source scripts/test_extensions.vim
+  source scripts/test_filetypes.vim
+  exec ':q!'
+"