[backend] Export .tar. This could be useful for using in kiwi_post_ru…

…n hook. For example for taring repo.

src/backend/bs_publish

@@ -1249,7 +1249,7 @@ sub publish {
 	  $p = "$bin";
 	} elsif ($bin =~ /\.raw(?:\.install)?(?:\.sha256)?$/) {
 	  $p = "$bin";
-	} elsif ($bin =~ /\.tar\.(?:gz|bz2|xz)(?:\.sha256)?$/) {
+	} elsif ($bin =~ /\.tar(?:\.(?:gz|bz2|xz))?(?:\.sha256)?$/) {
 	  $p = "$bin";
 	} elsif ($bin =~ /\.diff\.(?:gz)(?:\.sha256)?$/) {
 	  $p = "$bin";