Due to commit [1], it installs dracut config examples under /usr.
But while enable_test=no, the symlink of test in dracut config is broken
```
root@qemux86-64:~# ls /usr/lib/dracut/dracut.conf.d/test* -ahl
lrwxrwxrwx 1 root root 27 Apr 5 2011 /usr/lib/dracut/dracut.conf.d/test -> ../test/dracut.conf.d/test/
lrwxrwxrwx 1 root root 36 Apr 5 2011 /usr/lib/dracut/dracut.conf.d/test-makeroot -> ../test/dracut.conf.d/test-makeroot/
lrwxrwxrwx 1 root root 31 Apr 5 2011 /usr/lib/dracut/dracut.conf.d/test-root -> ../test/dracut.conf.d/test-root
root@qemux86-64:~# realpath /usr/lib/dracut/dracut.conf.d/test*
realpath: /usr/lib/dracut/dracut.conf.d/test: No such file or directory
realpath: /usr/lib/dracut/dracut.conf.d/test-makeroot: No such file or directory
realpath: /usr/lib/dracut/dracut.conf.d/test-root: No such file or directory
```
This commit cleans up test symlink if enable_test=no
[1] https://github.com/dracut-ng/dracut-ng/commit/
0d369e3e30935dffe48dfff1e90463868e7f804a
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
done
else
rm -rf $(DESTDIR)$(pkglibdir)/modules.d/70test*
+ rm -rf $(DESTDIR)$(pkglibdir)/dracut.conf.d/test*
endif
ifneq ($(enable_documentation),no)
for i in $(man1pages); do install -m 0644 $$i $(DESTDIR)$(mandir)/man1/$${i##*/}; done