fix options conflict in shutdown command

cccli/command/host.py

@@ -30,11 +30,11 @@ class Command_shutdown(TqlCommand):
     def __init__(self, cli, argv0):
         TqlCommand.__init__(self, cli, argv0)
         self.set_usage("%prog [options] <tql>")
-        self.add_option("-r", "--reboot", action="store_true", dest="reboot",
+        self.add_option("-R", "--reboot", action="store_true", dest="reboot",
                         help="Reboot after shutdown (default)")
         self.add_option("-H", "--halt", action="store_false", dest="reboot",
                         help="Halt after shutdown")
-        self.add_option("-n", action="store_false", dest="graceful", default=True,
+        self.add_option("-F", action="store_false", dest="graceful", default=True,
                         help="do not go through init but go down real fast")
 
     def __call__(self, argv):