Namespace the passwordstore lockfile (#8689)

* Namespace the lockfile

When passwordstore needs to grab a lock, it creates a statically file (within /tmp, typically). This is unfortunate, when there might be more than one user using the passwordstore functionality on that machine. Prepend the user to the filename, to bypass further issues.

* Update plugins/lookup/passwordstore.py

specifically reference the argument number in the format string.

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

* Add changelog fragment for PR#8689

* Update 8689-passwordstore-lock-naming.yml

I was sure that was a copy/paste.

* Update changelogs/fragments/8689-passwordstore-lock-naming.yml

specify the type of plugin

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

---------

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

changelogs/fragments/8689-passwordstore-lock-naming.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - passwordstore lookup plugin - add the current user to the lockfile file name to address issues on multi-user systems (https://github.com/ansible-collections/community.general/pull/8689).

plugins/lookup/passwordstore.py

@@ -469,7 +469,8 @@ class LookupModule(LookupBase):
     def opt_lock(self, type):
         if self.get_option('lock') == type:
             tmpdir = os.environ.get('TMPDIR', '/tmp')
-            lockfile = os.path.join(tmpdir, '.passwordstore.lock')
+            user = os.environ.get('USER')
+            lockfile = os.path.join(tmpdir, '.{0}.passwordstore.lock'.format(user))
             with FileLock().lock_file(lockfile, tmpdir, self.lock_timeout):
                 self.locked = type
                 yield