90481ec sanlock: add get_hosts api

Authored and Committed by teigland 11 years ago
    sanlock: add get_hosts api
    
    Returns info about hosts in a lockspace.
    
    Use this to display host status from the
    command line: sanlock client gets -h 1
    
    Signed-off-by: David Teigland <teigland@redhat.com>
    
        
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