vtctlclient ApplyRoutingRules advertises a -dry-run option that does not exist

[aquarapid]

E.g.:

$ vtctlclient -server 127.0.0.1:15999 ApplyRoutingRules -rules="$(cat /tmp/foo.json)" -dry-run
flag provided but not defined: -dry-run
Usage: ApplyRoutingRules {-rules=<rules> || -rules_file=<rules_file>} [-cells=c1,c2,...] [-skip_rebuild] [-dry-run]

Applies the VSchema routing rules.

  -cells value
        If specified, limits the rebuild to the cells, after upload. Ignored if skipRebuild is set.
  -rules string
        Specify rules as a string
  -rules_file string
        Specify rules in a file
  -skip_rebuild
        If set, do no rebuild the SrvSchema objects.
ApplyRoutingRules Error: rpc error: code = Unknown desc = flag provided but not defined: -dry-run

From the usage, it can be seen that a -dry-run option is advertised; but it does not actually exist, as a glance at the Vitess source will also show.

The documentation also refers to this in various places, e.g. https://vitess.io/docs/reference/features/schema-routing-rules/#applyroutingrules