Add /usr/sbin to pcmk-stack-restart Exec
Remove prefetch
Allow specifying resource name in providers

Without specifying resource name, each cluster resource is evaluated for
every pcmk resource. This causes serious lag when many (50+) resources
are configured.
Specify explicit path to pacemaker.rb
Update pcmk_location
Stop MS resource before deleting
Update pcmk_ms
Update pcmk_vip
Remove service class. Not needed with Corosync.
Add resource types.

Types:
    * DRBD
    * Filesystem
    * LSB
    * Xen
    * STONITH:
        * Meatware
        * External/IPMI
        * External/RackPDU