Skip test if --events-backend is necessary with podman-remote

`podman-remote` does not support `--events-backend`, which overrides a
log driver. When `--events-backend` is necessary in a test for
`podman-remote`, the test should be skipped.

We don't need to fix the other cases with
`_additional_events_backend()` because `_log_test_follow()` already has
the same skipping logic and `_log_test_multi()` always skips a test when
testing `podman-remote`.

Signed-off-by: Hironori Shiina <shiina.hironori@fujitsu.com>

test/system/035-logs.bats

@@ -135,6 +135,9 @@ ${cid[0]} d"   "Sequential output from logs"
 function _log_test_restarted() {
     local driver=$1
     local events_backend=$(_additional_events_backend $driver)
+    if [[ -n "${events_backend}" ]]; then
+        skip_if_remote "remote does not support --events-backend"
+    fi
     run_podman run --log-driver=$driver ${events_backend} --name logtest $IMAGE sh -c 'start=0; if test -s log; then start=`tail -n 1 log`; fi; seq `expr $start + 1` `expr $start + 10` | tee -a log'
     # FIXME: #9597
     # run/start is flaking for remote so let's wait for the container condition