fix(sct_events/setup.py): Filter LDAP connection resets
fix(sct_events/setup.py): Filter LDAP connection resets

Per scylladb/scylladb#11969 this error is considered harmless as it
happens during shutdown and doesn't affect the user

scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests