This fix is part of the effort to convert commands to spf13/cobra #23211.
Thif fix coverted command `docker images` to use spf13/cobra
NOTE: As part of this fix, a new function `RequiresMaxArgs()`
has been defined in `cli/required.go`. This func returns an
error if there is not at most max args
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>