* upstream/master: (21 commits)
fix typo
fix typo, use awslabs/aws-sdk-go
Update CHANGELOG.md
More internal links in template documentation.
providers/aws: Requires ttl and records attributes if there isn't an ALIAS block.
Condense switch fallthroughs into expr lists
Fix docs for aws_route53_record params
Update CHANGELOG.md
provider/aws: Add IAM Server Certificate resource
aws_db_instance docs updated per #2070
providers/aws: Adds link to AWS docs about RDS parameters.
Downgrade middleman to 3.3.12 as 3.3.13 does not exist
providers/aws: Clarifies db_security_group usage.
"More more" no more!
Indentation issue
Export ARN in SQS queue and SNS topic / subscription; updated tests for new AWS SDK errors; updated documentation.
Changed Required: false to Optional: true in the SNS topic schema
Initial SNS support
correct resource name in example
added attributes reference section for AWS_EBS_VOLUME
...