79b19cba16
The `--host-add` flag adds a new `host:ip` mapping. Even though adding an entry is idempotent (adding the same mapping multiple times does not update the service's definition), it does not _update_ an existing mapping with a new IP-address (multiple IP-addresses can be defined for a host). This patch removes the "or update" part from the flag's description. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>