install --all doesn't work

[airlift]

install --all doesn't work

[electrum]

Thanks for the bug report. The --all argument is actually an agent filter, just like --uuid or --host. It is used the same way that the --all slot filter is used for commands like airship start or airship stop. Those commands require a slot filter, so --all is necessary to select everything.

The install command (and the show command) selects all agents by default, so --all is not necessary. We will remove it from all commands that do not need it to avoid confusion.

You can install on multiple agents by specifying a count like --count 50 and it will install on up to that many agents. If the count is lower than the number of matching agents, then it will arbitrarily pick which ones to install onto.