expand chatqna gaudi waiting time (#351)

Signed-off-by: chensuyue <suyue.chen@intel.com>

ChatQnA/tests/test_chatqna_on_gaudi.sh

@@ -70,7 +70,7 @@ function start_services() {
  # Start Docker Containers
  docker compose -f docker_compose.yaml up -d
  n=0
- until [[ "$n" -ge 200 ]]; do
+ until [[ "$n" -ge 400 ]]; do
  docker logs tgi-gaudi-server > tgi_service_start.log
  if grep -q Connected tgi_service_start.log; then
  break