[PR #7873/13e3161f backport][stable-7] Refer to LXD containers/VMs as instances (#7890)

Refer to LXD containers/VMs as instances (#7873)

* plugins/connection/lxd: rename container to instance

Signed-off-by: Simon Deziel <simon.deziel@canonical.com>

* plugins/inventory/lxd: rename container to instance

It seems that a previous search and replace was done but it
missed those `containe_name` due to missing `r` in `container`.

Signed-off-by: Simon Deziel <simon.deziel@canonical.com>

---------

Signed-off-by: Simon Deziel <simon.deziel@canonical.com>
(cherry picked from commit 13e3161f2a)

Co-authored-by: Simon Deziel <simon.deziel@canonical.com>

plugins/connection/lxd.py

@@ -10,9 +10,9 @@ __metaclass__ = type
 DOCUMENTATION = '''
     author: Matt Clay (@mattclay) <matt@mystile.com>
     name: lxd
-    short_description: Run tasks in lxc containers via lxc CLI
+    short_description: Run tasks in LXD instances via C(lxc) CLI
     description:
-        - Run commands or put/fetch files to an existing lxc container using lxc CLI
+        - Run commands or put/fetch files to an existing instance using C(lxc) CLI.
     options:
       remote_addr:
         description:
@@ -24,7 +24,7 @@ DOCUMENTATION = '''
             - name: ansible_lxd_host
       executable:
         description:
-            - shell to use for execution inside container
+            - Shell to use for execution inside instance.
         default: /bin/sh
         vars:
             - name: ansible_executable
@@ -69,7 +69,7 @@ class Connection(ConnectionBase):
             raise AnsibleError("lxc command not found in PATH")
 
         if self._play_context.remote_user is not None and self._play_context.remote_user != 'root':
-            self._display.warning('lxd does not support remote_user, using container default: root')
+            self._display.warning('lxd does not support remote_user, using default: root')
 
     def _connect(self):
         """connect to lxd (nothing to do here) """