Turn on os-loganalyze dynamic indexes

This is a flag for the new swift+disk index lister
(https://review.openstack.org/#/c/214207)

Change-Id: I4b5436ceffddae8cebe885dafb7f1de40cd0cb9b

templates/os-loganalyze-wsgi.conf.erb

@@ -2,6 +2,7 @@
 filter = SevFilter
 view = HTMLView
 file_conditions = /etc/os_loganalyze/file_conditions.yaml
+generate_folder_index = true
 
 <% if @swift_authurl != "" -%>
 [swift]