Refactor `service_config` for easier grok-ing
Refactor `service_config` for easier grok-ing

* Adds openssl as a direct dep, for hashing with SHA256
* Replaces FNV with SHA256
* Centralizes where the config data comes from in service_config
* Moves user config to the `cfg` namespace
* Adds package data to the `pkg` namespace
* Adds bldr data to the `bldr` namespace
* Adds service group (census) data to the `svc` namespace
* Adds system data to the `sys` namespace
* Removes the old_census and old_service_config files
* Removes the watch_config, as it is no longer needed
* Adds unit tests for some configuration data

be-plans/be,be-plans/be,be-plans/be,be-plans/be