* Created the new method Cluster->get_primary_host_uuid() that returns the 'host_uuid' of the primary node in the given cluster. This is useful for external programs to figure out which node is primary. Example is provisioning a new server being assigned to the active node. Also created ->is_primary() that is a similar test to see if the active node is the primary node or not.
* Updated Cluster->parse_cib() and ->parse_crm_mon() to work on remote hosts.
* Updated Database->get_hosts() to store the short host names.
* Created Get->host_from_ip_address() that translates an IP address to a host_uuid and host_name, if it's an IP assigned currently to a known host.
* Created Network->find_target_ip() that simplifies finding which IP address to use when the caller wants to connect to a target host.
* Reworked the anvil-join-anvil to parse fence_arguments in a way that handles passwords with spaces in them.
Signed-off-by: Digimer <digimer@alteeve.ca>