Make crawler log files available via http

To enable the mirror admins to consult the last output of
the MM2 crawler, this makes the logs available via http.
This still needs the corresponding forwards on the reverse proxy.

roles/mirrormanager/crawler/files/mirrormanager.conf

@@ -0,0 +1,13 @@
+Alias /mirrormanager/crawler /var/log/mirrormanager/crawler
+
+<Directory /var/log/mirrormanager/crawler>
+    <IfModule mod_authz_core.c>
+        # Apache 2.4
+        Require all granted
+    </IfModule>
+    <IfModule !mod_authz_core.c>
+        # Apache 2.2
+        Order deny,allow
+        Allow from all
+    </IfModule>
+</Directory>

roles/mirrormanager/crawler/tasks/main.yml

@@ -9,6 +9,7 @@
 - name: install needed packages
   yum: pkg={{ item }} state=present
   with_items:
+  - httpd
   - mirrormanager2-crawler
   - python-psycopg2
   - fedmsg
@@ -30,3 +31,12 @@
   copy: src=crawler.cron dest=/etc/cron.d/mm2_crawler.cron
   tags:
   - config
+
+- name: install configuration file
+  template: src={{ roles }}/mirrormanager/crawler/files/mirrormanager.conf
+            dest=/etc/httpd/conf.d/mirrormanager.conf
+            owner=apache group=apache mode=0600
+  notify:
+  - restart httpd
+  tags:
+  - config