v2.1.0-alpha.4

Add ConsistentRead parameter support to FakeDynamoDBInterface

Updated FakeDynamoDBInterface to accept (but ignore) the ConsistentRead
parameter for operations that support it in DynamoDB:
- get
- queryOnePage
- queryAllPages
- scanOnePage
- scanAllPages

The parameter is now accepted to maintain compatibility with real DynamoDB
operations, but it is not processed as the fake implementation does not
distinguish between strongly consistent and eventually consistent reads.

Updated unit tests to verify that ConsistentRead is accepted for all
applicable operations instead of throwing an error.