disable TestAPI update temporarily

disable TestAPI update temporarily

recently I plan to make some effort on TestAPI,
add scenario processing exceptions, perfect swaggr documents,
refactor unreasonable coding...etc, all of those will not change
the original process or data structure, whilst many patches
will be submitted. Because there is latency during TestAPI update,
and it will cause test results lost, so I think it is better to
disable TestAPI automatic update for now and re-enable it when the
work gets done.

Change-Id: I5ceab808350a1ece500c8743622d197326aa5419
Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>