Merge Correlation & Traceability Handler

[KalevGonvick]

• Traceability and Correlation Handlers have a constraint where traceability should come first in the handler chain.
• Combining the two handlers would make configurations more manageable and leave less room for error when defining a handler chain.
• This change should include some backwards compatibility considerations so we do not interfere with pre-existing configurations. The traceability handler should also be changed into a dummy handler that just lets people know that this handler is deprecated and can be removed from your configured handler chain.