[PR #9659/06df717b backport][stable-10] lxd_connection: Allow non-root users to connect to an instance (#9751)

lxd_connection: Allow non-root users to connect to an instance (#9659)

* fix: add support for non-root user

* fix: show correct info for connection

* fix: use build_exec_command to execute as nonroot

* unset default user

* feat: add options for setting remote user and become method

* fix: add root as default remote_user

* fix: remove ansible_ssh_user from remote_user vars

* fix: use single quotes inside f-string

* fix: ensure lxc exec comes first

* fix: line length

* fix: use -c flag with su

* Update plugins/connection/lxd.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update plugins/connection/lxd.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update plugins/connection/lxd.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* doc: add changelog fragment

* fix: use underscore for module name in fragment

* Update 9659-lxd_connection-nonroot-user.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* fix: add put command

* feat: add get_remote_uid_gid placeholder function

* feat: complete placeholder _get_remote_uid_gid function

* fix: better logging

* fix: ensure default values are of type str

* fix: use ints for uid and gid

* fix: print put command

* fix: format

* fix: display msg for PUT

* fix: add comment about defaults

* fix: format

* fix: use os module to get uid and gid

* Revert "fix: use os module to get uid and gid"

This reverts commit bb2ba14b8f.

* Update plugins/connection/lxd.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* fix: omit uid, gid args in lxd file push if root

---------

Co-authored-by: Felix Fontein <felix@fontein.de>
(cherry picked from commit 06df717bc6)

Co-authored-by: Peter Siegel <33677897+yeetypete@users.noreply.github.com>

changelogs/fragments/9659-lxd_connection-nonroot-user.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - lxd connection plugin - adds ``remote_user`` and ``lxd_become_method`` parameters for allowing a non-root user to connect to an LXD instance (https://github.com/ansible-collections/community.general/pull/9659).