Incorrect auto-completion suggestions when non-default project is selected

[MusicDin]

Issue description

It seems that auto-completion suggests resources from default project when different project is selected and --project flag is not used.

Steps to reproduce

$ lxc project create test
$ lxc init images:alpine/edge c1 -s default
$ lxc init images:alpine/edge c2 -s default --project test
$ lxc delete [TAB]
c1

$ lxc delete --project test [TAB]
c2

$ lxc project switch test        # Switch to a different project.
$ lxc delete --project default [TAB]
c1

$ lxc delete --project test [TAB]
c2

$ lxc delete [TAB]               # Project not explicitly specified.
c1                               # <-- This is wrong (c1 is in default project)

$ lxc delete c1
Error: Failed checking instance exists "local:c1": Failed to fetch instance "c1" in project "test": Instance not found

[kadinsayani]

This is another issue only found in the LXD snap, similar to #14635 (comment).

root@c1:~# lxc __complete delete c
c2
:6
Completion ended with directive: ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp
root@c1:~# lxc delete [TAB]
c1

Regenerating the completion script and sourcing it should fix this issue for now, see https://documentation.ubuntu.com/lxd/en/latest/installing/#shell-completions.

I'll continue investigating a potential solution for the LXD snap completion issues :)

cc. @simondeziel

[kadinsayani]

Closed by canonical/lxd-pkg-snap#674.