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**Related issue:** Resolves#41385
# Details
This PR updates `fleetctl` to use the new API urls and params when
communicating with Fleet server. This avoids deprecation warnings
showing up on the server that users won't be able to fix.
Most of the changes are straightforward `team_id` -> `fleet_id`. A
couple of code changes have been pointed out. The most interesting is in
icon URLs, which can be persisted in the database (so we'll need to do a
migration in Fleet 5 if we want to drop support for `team_id`.
Similarly the FMA download urls are briefly persisted in the db for the
purpose of sending MDM commands. If we drop team_id support in Fleet 5
there could be a brief window where there are unprocessed commands in
the db still with `team_id` in them, so we'll probably want to migrate
those as well.
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [ ] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.
n/a - all internal
## Testing
- [X] Added/updated automated tests
- [X] QA'd all new/changed functionality manually
- [X] ran `fleetctl gitops` on main and saw a bunch of deprecation
warnings, ran it on this branch and the warnings were gone 💨
- [X] same with `fleetctl generate-gitops`
- [X] ran `fleetctl get` commands and verified that the new URLs and
params were used
- [X] ran `fleetctl apply` commands and verified that the new URLs and
params were used