Fix error when removing a symbolic link to a dir

src/pylorax/yumhelper.py

@@ -107,10 +107,10 @@ class LoraxYumHelper(object):
                 fullpattern = joinpaths(self.installroot, pattern)
                 count = 0
                 for fname in glob.glob(fullpattern):
-                    if os.path.isdir(fname):
-                        shutil.rmtree(fname)
-                    else:
+                    if os.path.islink(fname) or os.path.isfile(fname):
                         os.unlink(fname)
+                    else:
+                        shutil.rmtree(fname)
 
                     logger.debug("removed {0}".format(fname))
                     count += 1