Introduce DISPUTED state for Batches

[koekiebox]

Goal:

As a hub operator

I want to dispute a batch, or set of batches for Settlement

so that a DISPUTED batch will be excluded from all settlement matrixes

Acceptance Criteria:

• Ability to mark a batch or set of batches as DISPUTED
• Domain unit tests are passing and test cases to extensively test disputed functionality
• A new type of settlement matrix that would target specific batches to be disputed
• SETTLED batches may not be disputed

Complexity: <Medium>

Uncertainty: <Low> N/A.

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Tasks:
The statuses for a batch is currently:

• OPEN : Batch may still receive transfers
• CLOSED : A batch has been closed and settled
  A new status needs to be introduced to mark a batch as DISPUTED.
  When a batch is in dispute, it may not be considered as part of the settle-able balance for a settlement matrix.

A type of matrix request needs to be generated in order to dispute batches.
SETTLED batches are not allowed to be disputed.

Background:

Please see: mojaloop/mojaloop-specification#117

Done

• Tests coverage is adequate

Pull Requests:

mojaloop/settlements-bc#5

Follow-up:

• N/A

Dependencies:

• N/A

Accountability:

• Owner: @koekiebox
• QA/Review: @pedrosousabarreto