- added trail_db_daily_backup_host
- fixed a wee doc bug in the RedHat upgrade section
- changed to use JSP & Ruby style variable substition
- added new section on changing the DB master to the slave
- added new section on changing the DB virtual IP
- added support for tons of new trails
- added section on how to verify the success of the VIP failover (TODO:
  test!)

  trails to test with:

  trail_analysis_host=analysis
  trail_analysis_port=80
  trail_builder_host=builder.example.com
  trail_builder_user=nie
  trail_cache_backend_servers="pres7:8080 pres8:8080 pres9:7766"
  trail_control_host=control
  trail_db_daily_backup_host=$trail_db_slave_host
  trail_db_master_host=db1
  trail_db_schema=niedb
  trail_db_slave_host=db2
  trail_db_vendor=percona
  trail_db_vip_host=db
  trail_db_vip_interface=eth1:0
  trail_db_vip_ip=192.168.1.200
  trail_db_vip_netmask=255.255.255.0
  trail_editor_host=edit1
  trail_escenic_backups_dir=/var/backups/escenic
  trail_import_host=edit2
  trail_lb_host=load-balancer
  trail_monitoring_host=mon
  trail_monitoring_port=80
  trail_network_name=my.hosting.partner.com
  trail_nfs_master_host=nfs1
  trail_nfs_slave_host=nfs2
  trail_nfs_vip_host=nfs
  trail_presentation_host=pres1
  trail_presentation_host_list="$trail_presentation_host pres2"
  trail_virtual_host_nie=mysite.com:8080
- added default VIP interface
- getting the Percona key cannot be run in the run wrapper since it
  often fails
- pipe output of gpg to the log file instead of /dev/null
- added the NFS fstab options in the actual fstab roll out, this
  should have been a part of 5295c651e5cc216aa0ca99679a6f7404ed92d4ce
- the .org files now use the trail_ variable names directly
- the trail_ variables from the .conf are now dynamically
  expanded. This means that if you add trail_foo, you can instanly use
  this variable in your documentation. There's no longer an internal
  variable-expansion mapping table in create-handbook.sh
- added chapter on network file systems
- added chapter on content engine instances, describing presentation
  and publication servers.
- renamed the "updating search server" chapter to just "search server"
- added link to AuthenticationFilterCache where it's easy to see who
  has logged in since the ECE was started. Flushing the cache will
  then give you the currently logged in users.
- added network-file-system chapter
- fixed the search ports of the editor and import hosts
- if you don't have trail_db_daily_backup_host set, the backup chapter
  will not include the DB backup
- added support for custom(er) specific chapters. This is useful for
  including chapters on VPN configuration and SSH hop servers, which
  always will be different from customer to customer.

  To use this feature,  create a directory called "customer" where the
  regular .org files are. Files you put in "customer" will overrides
  any of the existing .org chapters, whereas new chapters put in
  customer/extra-chapters will be included at the end of the VOSA
  handbook.

  For instance, to add a chapter on VPN setup and override the cache
  chapter, you'd have:

    customer/extra-chapters/connecting-to-example-dot-com-vpn.org
    customer/extra-chapters/cache-server.org

  Re-running create-handbook.sh would then include these in the right
  places.

  All the trail_ variables are available to you when you write your
  own chapters. Have a look at the standard .org files for a clue on
  this.