tests/dbus/test-tpl-log-iters-xml: use tpl_test_create_and_prepare_account()
tests/dbus/test-tpl-log-iters-xml: use tpl_test_create_and_prepare_account()

This test will rely on the TpAccount to be prepared soon.

https://bugs.freedesktop.org/show_bug.cgi?id=69814

freedesktop-unofficial-mirror/telepathy__telepathy-logger,freedesktop-unofficial-mirror/telepathy__telepathy-logger,freedesktop-unofficial-mirror/telepathy__telepathy-logger