tests/dbus/connection-balance: use tp_tests_proxy_run_until_prepared()
tests/dbus/connection-balance: use tp_tests_proxy_run_until_prepared()

Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib