roles/koji-web: Deploy the Koji Web UI

The *koji-web* role installs and configures the Koji Web GUI front-end
for Koji. It requires Apache and mod_wsgi. A client certificate is
required for authentication to the hub, and must be placed in the
host-specific subdirectory of `certs/koji`.

roles/koji-web/defaults/main.yml

@@ -0,0 +1,11 @@
+koji_uid: 998
+koji_gid: 996
+koji_home: /var/lib/koji
+kojihub_host: "{{ ansible_fqdn }}"
+kojihub_url: https://{{ kojihub_host }}/kojihub
+kojiweb_hostname: "{{ kojihub_host }}"
+kojiweb_url: https://{{ kojiweb_hostname }}/koji
+kojifiles_host: "{{ kojihub_host }}"
+kojifiles_url: http://{{ kojifiles_host }}/kojifiles
+kojiweb_secret: >
+  {{ lookup("password", "passwords/kojiweb_secret/" + inventory_hostname) }}