provider

[djthorpe]

The provider (and the command line executable) should:

• Load all the plugins through a -plugins option
• List the plugins loaded
• Reflect on the configuration of the plugins
• Display the configuration with -help
• Create a new empty configuation
• Set and get properties within each configuration
• Create a graph of dependencies based on setting properties
• Create tasks in the right graph order
• Run the tasks, and stop them in the reverse order when signal is received

It will be a further step to express the configuration in HCL or another config language, later.