The previous test uses only libsoccr_restore. This test
creates a tcp connection, then it dumps and restore it.

travis-ci: success for soccr: add one more test to check libsoccr_save/libsoccr_restore
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>