Service/Machine Account Naming Convention

[virtix]

This is to define a consistent naming convention for accounts that represent (non-human/non-SF-native) services; e.g., Jenkins, GitHub. The convention should let the administrator know at a glance what the general purpose of the account is.

svc_[COMMON_NAME]_[int | ext], where COMMON_NAME is the name of the service, int would indicated whether the account is an internal or external service.

Examples:

svc_github_ext or svc_jenkins_int

/cc @miklane