Be able to delete temporary files on a different mount point

We are able to create files on a different mount point, but not delete
them. This is at most inconvenient, except when running tests.

A lot of the tests just checks of anything has been written to 'stderr',
if it has, the test fail. Since we are not allowed to delete files, the
parent directory is not empty when it is supposed to be removed, and an
error message is printed to 'stderr'.

If we are able to create files, we should be allowed to delete them as
well.

Author: havardAasen

src/common/oscap_acquire.c

@@ -210,7 +210,7 @@ void oscap_acquire_cleanup_dir(char **dir_path)
 {
 	if (*dir_path != NULL)
 	{
-		nftw(*dir_path, __unlink_cb, 64, FTW_DEPTH | FTW_PHYS | FTW_MOUNT);
+		nftw(*dir_path, __unlink_cb, 64, FTW_DEPTH | FTW_PHYS);
 		free(*dir_path);
 		*dir_path = NULL;
 	}