use boshmodels Package instead of json based Package for compiling

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>
inline Compiler and Applier providers

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>
use PackageApplier to install compiled dependencies

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>