[rancid] arcos End of run not found

[Randy Bush]

```
$ freebsd-version 
13.0-RELEASE-p10
$ rancid --version
/usr/local/libexec/rancid/rancid version 3.13 calling Getopt::Std::getopts (version 1.12 [paranoid]),
running under Perl version 5.32.1.
```

```
$ grep r2.sea $HOME/var/psgnet/router.db 
r2.sea.rg.net;arcos;up
```

logging in seems to work
```
$ clogin r2.sea.rg.net
r2.sea.rg.net
spawn ssh -x -l rancid r2.sea.rg.net
ARCOS (c) Arrcus, Inc.
rancid at r2.sea.rg.net's password: 
Welcome to the ArcOS CLI
rancid connected from 147.28.0.35 using ssh on r2.sea
rancid at r2.sea# 
rancid at r2.sea# q
Connection to r2.sea.rg.net closed.
```

but getting config does not
```
$ rancid -d -t arcos r2.sea.rg.net
loadtype: device type arcos
loadtype: found device type arcos at /usr/local/etc/rancid/rancid.types.base:57
executing xilogin -t 90 -c"show version;show hardware | notab;show running-config" r2.sea.rg.net
PROMPT MATCH: rancid at r2.sea#
HIT COMMAND:rancid at r2.sea#  show version
    In ShowVersion: rancid at r2.sea#  show version
HIT COMMAND:rancid at r2.sea# show hardware | notab
    In ShowVersion: rancid at r2.sea# show hardware | notab
r2.sea.rg.net: End of run not found
r2.sea.rg.net: clean_run is false
r2.sea.rg.net: found_end is false
!
```

`show run | tail` yields
```
 acl-entry 104
  ipv6 source-address ::/0
  ipv6 destination-address ::/0
  actions forwarding-action ACCEPT
 !
!
```

maybe it does not like the final bang?  maybe it meant to pipe a command
to `| nomore`?

randy