Update handler.yml template in Handler module to support audit on demand

[ddobrin]

Generate the lighthttphandler.yml file.

Note: The YML takes the name of the file, as the handler module has also an additional handler.yml file for the corresponding Handler class; clear separation of functionality here.

[stevehu]

update light-graphql-4j template to leverage handler.yml master

[ddobrin]

Changes made in light-4j (#607) and light-rest-4j(#107) to add the properties in handler,yml and move AUDIT_INFO to AttachmentConstants

[stevehu]

Update handler.yml template in Handler module to support audit on demand 1.6.x

[stevehu]

Update handler.yml template in Handler module to support audit on demand master