[2.7] Clean up after ansible-connection if failure occurred in start() (#45930)

* [2.7] Clean up after ansible-connection if failure occurred in start() (#45929)
(cherry picked from commit 0d143ed)

Co-authored-by: Nathaniel Case <this.is@nathanielca.se>

* Add changelog fragment

bin/ansible-connection

@@ -271,6 +271,8 @@ def main():
 
                     if rc == 0:
                         process.run()
+                    else:
+                        process.shutdown()
 
                     sys.exit(rc)
 

changelogs/fragments/ansible-connection-cleanup-when-failed.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+    - ansible-connection - Clean up socket files if playbook aborted before connection is started.