component: Update bzip2 download url after the expiration of domain

   bzip.org don't exist anymore, download from fosseis is ok as the md5sum guarantee we still get the same file.

component/bzip2/buildout.cfg

@@ -5,7 +5,7 @@ parts =
 [bzip2]
 recipe = slapos.recipe.cmmi
 shared = true
-url = http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz
+url = https://fossies.org/linux/misc/bzip2-1.0.6.tar.gz
 md5sum = 00b516f4704d4a7cb50a1d97e6e8e15b
 configure-command = true
 make-options =