apache: Fix Django directives to serve cobbler imports of SLES

As fixed earlier in 041bbd6b and 2813d19,
http://<server>/cblr/links/SLES11-SP3-ppc64/media.1 is not even
displayed in http://<server>/cblr/links/SLES11-SP3-ppc64/.

With this patch, Cobbler installed on the same server as
the autotest server can install SLES again.

Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>