HTTP-Functions: Wrong header values for x-cff-project-id and x-cff-region

[harald-tsys]

Currently the FunctionGraph backend returns wrong request header values for:

• x-cff-project-id
• x-cff-region

For workaround see: https://opentelekomcloud-community.github.io/otc-functiongraph-nodejs-runtime/devguide/http_function/_index.html#common-request-headers-of-http-functions