Added support for resolving augmentations.

Added support for resolving augmentations.

Added implementation into BindingGeneratorImpl to support generation of augmentati statements from yang models.
Added AugmentedTypeTest and augmented-test-models for testing of agumentation functionality.

Added ability to generate Java Interfaces that extends generic types.
Added Augmentation and Augmentable interfaces into yang-binding project.

Fixed bug in bad equals resolving in AbstractBaseType in binding-generator-util;
Added ReferencedTypeImpl into binding-generator-util;

Added findParentModule static method into SchemaContextUtil for resolving Module from SchemaNode in Schema Tree;
Added DATA_OBJECT, augmentableTypeFor and augmentationTypeFor into Types for referencing of Augmentable<T>, Augmentation<T> and DataObject interfaces defined in yang-binding;

Fixed incorrect resolving of namespaces and package names during generation of interfaces from yang lists;
Fixed bug in TypeProvider in resolving of extended types extended from multiple extended types;
Added ControllerTest and controller-models as test resources;
Changed position of revision date during package generation -> Now revision date comes after namespace;

Change-Id: I687925a622853bb6c9a809f17efd980c2960ae39
Signed-off-by: Lukas Sedlak <lsedlak@cisco.com>
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>