Rename environmental variable "PORT" SP 0.5

[daniel-arnauer]

Description 😯

The env var PORT is used in the API and excel-export project to define the port. This is confusing when using an .env file for multiple services (like the .env file in dev or operation setup) .

Solution

Rename PORT in API to API_PORT and in excel-export to EXCEL_EXPORT_PORT.

Also rename API_HOST to MASTER_API_HOST and API_PORT (the current) to MASTER_API_PORT and API_PROTO to MASTER_API_PROTO

This is a breaking change for existing deployments!

Your Environment 🌎

v1.26.0

[Stezido]

We want to use PORT for every service as own port env var name.
Renaming API_HOST would lead to even more confusion because API_HOST is the external api host of another network for the blockchain service. When a node is started as "master"- node it wouldn't need the MASTER_API_HOST env var - that's confusing

[georgimld]

keep format of env vars for enabled services consistent:

e.g. DOCUMENT_FEATURE_ENABLED= true vs DOCUMENT_SERVICE=enabled

Should always be: XX_SERVICE_ENABLED=true