[Add] add pip install rqdatac in windows sdist test

appveyor.yml

@@ -56,6 +56,7 @@ for:
     build_script:
       - python setup.py sdist
       - pip install psycopg2 mongoengine pymysql  # we should support all database in test environment
+      - pip install --pre --extra-index-url https://rquser:ricequant99@py.ricequant.com/simple/ rqdatac
       - pip install https://pip.vnpy.com/colletion/TA_Lib-0.4.17-cp37-cp37m-win_amd64.whl
       - pip install https://pip.vnpy.com/colletion/ibapi-9.75.1-001-py3-none-any.whl
       - ps: $name=(ls dist).name; pip install "dist/$name"