start the update server and attach to a running fuchsia device
usage: fx serve-updates [-v] [-l host[:port]] [-c version] [--no-auto-config] -l host:port host and port that "pm serve" will listen on -c version configuration format version for the served config.json that "pm" will serve. Valid choices: 1 or 2. Choosing `1` will serve a file which can be processed by `amberctl` and `pkgctl repo add ... -f 1`. Choosing `2` will serve a file which cannot be processed by `amberctl` but by `pkgctl repo ...` without the `-f 1` switch. --no-auto-config do not configure this host as a package server on the device --[no-]persist enable or disable persistence of repository metadata. Disabled by default. -v verbose mode, shows info and debug messages from "pm" -C|--clean clean the package repository first. This flag is only valid if the incremental package publishing is enabled. This command supports incremental package publishing. If enabled, it will auto-publish packages as they are created or modified. To enable incremental package serving, run "fx --enable=incremental serve-updates ..."