Best practices to keep password configuration files

Summary

Best practices to keep password configuration files

Content

VB Studio: Referring configuration files outside git

We are creating a deployment script in VB Studio to deploy applications in various VBCS, OIC, JCS etc servers. We are planning to create a configuration file which is required for our deployment script. For example to deploy in OIC connectors we need host/username/pwd so we are placing them in configuration file. We need all connector related credentials also so we can't create password parameters as it will be huge list and there are always chances of typos. We want to keep them in some kind of file but then we don't want to check-in file in git otherwise developers