cli: T6769: check commit arguments

Check usage: `commit [comment COMMENTTEXT]`

Make any other option combination an error and don't
pass other arguments to inner scripts.

Before this commit command `commit` silently accepted any
number of arguments, moreover given
`spam1 comment hi1 spam2 comment hi2 spam3`
parsing script silently ignored first `comment hi1`, has written
`hi2` as comment and passed `spam1 spam2 spam3` to inner script.

There are two options for inner scripts:

/opt/vyatta/sbin/my_commit
    Code in vyatta-cfg/src/cli_bin.cpp$
    argv is used to check script name and passed to doCommit which ignores it

/usr/libexec/vyos/vyconf/bin/vy_commit
    vyos-1x/python/vyos/vyconf_session.py
    In similar way argv is used to determine script name

Both don't use any arguments, so passing and collecting other arguments
seems not needed and confusing

0 files changed, 0 insertions, 0 deletions