fix unittest (fix dep)/integration test (remove short option)

[sunya-ch]

This PR is to fix previous failed CI.
The integration test seems to be failed due to dependency of kubectl version.
The unit test got an error due to new release of Werkzeug. Need to fix the version in base image.

Traceback (most recent call last):
  File "src/server/model_server.py", line 1, in <module>
    from flask import Flask, request, json, make_response, send_file
  File "/usr/local/lib/python3.8/site-packages/flask/__init__.py", line 7, in <module>
    from .app import Flask as Flask
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 27, in <module>
    from . import cli
  File "/usr/local/lib/python3.8/site-packages/flask/cli.py", line 17, in <module>
    from .helpers import get_debug_flag
  File "/usr/local/lib/python3.8/site-packages/flask/helpers.py", line 14, in <module>
    from werkzeug.urls import url_quote
ImportError: cannot import name 'url_quote' from 'werkzeug.urls' (/usr/local/lib/python3.8/site-packages/werkzeug/urls.py)

Signed-off-by: Sunyanan Choochotkaew [email protected]