ForceRead reads configuration from given file name or bails out if it fails.

MarkConfigurationLoaded is called once configuration has first been loaded.

Read reads configuration from zero, either, some or all given files, in order of input.

Reload re-reads configuration from last used files.

Config is *the* configuration instance, used globally to get configuration data.

CLIFlags stores some command line flags that are globally available in the process' lifetime.

Configuration makes for orchestrator configuration input, which can be provided by user via JSON formatted file.