new dmg cli syntax

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell --help
Usage:
  daos_shell [OPTIONS] [command]

Application Options:
  -l, --hostlist=    comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=    path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                     takes preference over HostList
  -o, --config-path= Client config file path

Help Options:
  -h, --help         Show this help message

Available commands:
  network  Perform tasks related to locally-attached network devices (aliases: n)
  pool     Perform tasks related to DAOS pools (aliases: p)
  service  Perform distributed tasks related to DAOS system (aliases: sv)
  storage  Perform tasks related to locally-attached storage (aliases: st)

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell network --help
Usage:
  daos_shell [OPTIONS] network

Application Options:
  -l, --hostlist=    comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=    path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                     takes preference over HostList
  -o, --config-path= Client config file path

Help Options:
  -h, --help         Show this help message

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell pool --help
Usage:
  daos_shell [OPTIONS] pool

Application Options:
  -l, --hostlist=    comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=    path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                     takes preference over HostList
  -o, --config-path= Client config file path

Help Options:
  -h, --help         Show this help message

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell service --help
Usage:
  daos_shell [OPTIONS] service <kill-rank>

Application Options:
  -l, --hostlist=    comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=    path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                     takes preference over HostList
  -o, --config-path= Client config file path

Help Options:
  -h, --help         Show this help message

Available commands:
  kill-rank  Terminate server running as specific rank on a DAOS pool (aliases: kr)

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell storage --help
Usage:
  daos_shell [OPTIONS] storage <list>

Application Options:
  -l, --hostlist=    comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=    path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                     takes preference over HostList
  -o, --config-path= Client config file path

Help Options:
  -h, --help         Show this help message

Available commands:
  list  List locally-attached SCM and NVMe storage (aliases: l)

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell storage list --help
Usage:
  daos_shell [OPTIONS] storage list

Application Options:
  -l, --hostlist=    comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=    path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                     takes preference over HostList
  -o, --config-path= Client config file path

Help Options:
  -h, --help         Show this help message

[tanabarr@ssh-1 ~]$ projects/daos_m/install/bin/daos_shell service kill-rank --help
Usage:
  daos_shell [OPTIONS] service kill-rank [kill-rank-OPTIONS]

Application Options:
  -l, --hostlist=      comma separated list of addresses <ipv4addr/hostname:port> (default: localhost:10001)
  -f, --hostfile=      path of hostfile specifying list of addresses <ipv4addr/hostname:port>, if specified
                       takes preference over HostList
  -o, --config-path=   Client config file path

Help Options:
  -h, --help           Show this help message

[kill-rank command options]
      -r, --rank=      Rank identifying DAOS server
      -p, --pool-uuid= Pool uuid that rank relates to