Update AppVeyor Server appsettings.json

update_appveyor_server_appsettings.py

import os, codecs, json

appsettings_path = "/etc/opt/appveyor/server/appsettings.json"

with codecs.open(appsettings_path, mode="rb", encoding="utf8") as f:
    appsettings = json.JSONDecoder().decode(f.read())

# SQLite, SQL Server, PostgreSQL
db_provider = os.getenv("APPVEYOR_DATABASE_PROVIDER")
appsettings["AppVeyor"]["Database"]["Provider"] = db_provider
appsettings["AppVeyor"]["Database"][db_provider + "ConnectionString"] = os.getenv("APPVEYOR_DATABASE_CONNECTION_STRING")
appsettings["AppVeyor"]["Security"]["MasterKey"] = os.getenv("APPVEYOR_MASTER_KEY")
appsettings["AppVeyor"]["Security"]["MasterKeySalt"] = os.getenv("APPVEYOR_MASTER_KEY_SALT")

with codecs.open(appsettings_path, mode="wb", encoding="utf8") as f:
    f.write(json.JSONEncoder().encode(appsettings))