Agilia metrics-engine integration.

Agilia allows named metrics for projects/subprojects. These are fairly open, but things like "Coverage", "Test Passes" are expected. Most will be Maven generated things. For a plain metric called "Build Success" (that is kinda digital 0 and 1), DC is the obvious tool for pushing a simple HTTP result metric to Agilia.

Like 'Maven site:publish' it is not envisaged that all users will do it, thus only so configured DC instances would post something like ..

https://agilia.org/somecontext/metrics-engine?ProjectName=PicoContainer&SubProjectName=Core&MetricName=BuildPass&Value=1&Authentication=Fred/Fred

.. at the end of the build

Agilia is planned to go live for XPDay.