rsyncd / download: adjust odcs to allow package rsyncs

odcs just links to the packages in a compose on the /mnt/koji volume
with relative symlinks. ie (
../../../../../../../../mnt/koji/packages/zip/3.0/28.eln109/data/signed/9867c58f/x86_64/zip-3.0-28.eln109.x86_64.rpm
)
Change odcs on download servers to mount on /mnt like koji and then tell
rsync to chroot at /mnt, so it can follow those links and copy the file
from koji volume.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

playbooks/groups/download.yml

@@ -40,7 +40,7 @@
   - { role: nfs/client, when: datacenter == "iad2" or datacenter == "rdu", mnt_dir: '/srv/pub',  nfs_src_dir: 'fedora_ftp/fedora.redhat.com/pub' }
   - { role: nfs/client, when: datacenter == "iad2" or datacenter == "rdu", mnt_dir: '/srv/pub/archive',  nfs_src_dir: 'fedora_ftp_archive' }
   - { role: nfs/client, when: datacenter == "iad2", mnt_dir: '/mnt/koji',  nfs_src_dir: 'fedora_koji/koji/' } # needed for internal sync and odcs
-  - { role: nfs/client, when: datacenter == "iad2", mnt_dir: '/srv/odcs',  nfs_src_dir: 'fedora_odcs' } # needed for internal sync
+  - { role: nfs/client, when: datacenter == "iad2", mnt_dir: '/mnt/odcs',  nfs_src_dir: 'fedora_odcs' } # needed for internal sync
   - sudo
 
   pre_tasks:

roles/download/files/httpd/dl.fedoraproject.org/secondary.conf

@@ -1,5 +1,5 @@
 Alias /pub /srv/pub
-Alias /odcs /srv/odcs
+Alias /odcs /mnt/odcs
 
 DocumentRoot /srv/web
 
@@ -18,7 +18,7 @@ DocumentRoot /srv/web
   </IfModule>
 </Directory>
 
-<Directory /srv/odcs>
+<Directory /mnt/odcs>
   HeaderName /HEADER.html
   ReadmeName /FOOTER.html
   Options Indexes FollowSymLinks

roles/rsyncd/templates/rsyncd.conf.download.j2

@@ -96,7 +96,7 @@ refuse options = checksum
 
 [ fedora-eln ]
 	comment = Fedora ELN composes
-	path = /srv/odcs
+	path = /./mnt/odcs
 	{% if inventory_hostname in groups['download_tier1'] %}
        hosts allow = {% for host in vars['dl_tier1'] %}{{host}},{% endfor %}
         {% endif %}