Adds support for DocumentClient API calls to be captured as Datastore segments/metrics.

Supported calls are: get, put, update, delete, query and scan. These will be named according to the underlying DynamoDB operation that is executed. For example: get will be named getItem. DocumentClient calls not listed above will still be captured as Externals.

Fixed issue that would prevent multiple DynamoDB instances from being instrumented.

Replaced database_name with collection in DynamoDB attributes.

Moved name property to the root of DynamoDB segment description object.

Previously, segments were being incorrectly named "Datastore/operation/DynamoDB/undefined", due to the operation name being misplaced.

Added instrumentation for SNS publish API.

Added instrumentation for SQS sendMessage, sendMessageBatch and receiveMessageBatch APIs.

Added instrumentation for services to be recorded as HTTP externals.

• APIGateway
• ELB
• ElastiCache
• Lambda
• RDS
• Redshift
• Rekognition
• S3
• SES

Added instrumentation for DynamoDB.