Added test for loading an application from a .groovy file.
Added test for loading an application from a .groovy file.

andreaturli/legacy-brooklyn,neykov/incubator-brooklyn,aledsage/legacy-brooklyn,andreaturli/legacy-brooklyn,bmwshop/brooklyn,neykov/incubator-brooklyn,andreaturli/legacy-brooklyn,andreaturli/legacy-brooklyn,bmwshop/brooklyn,andreaturli/legacy-brooklyn,neykov/incubator-brooklyn,andreaturli/legacy-brooklyn,bmwshop/brooklyn,neykov/incubator-brooklyn,aledsage/legacy-brooklyn,neykov/incubator-brooklyn,aledsage/legacy-brooklyn,aledsage/legacy-brooklyn,aledsage/legacy-brooklyn,aledsage/legacy-brooklyn,bmwshop/brooklyn,neykov/incubator-brooklyn,bmwshop/brooklyn,bmwshop/brooklyn,andreaturli/legacy-brooklyn,bmwshop/brooklyn,aledsage/legacy-brooklyn