* upstream/master:
Update CHANGELOG.md
Update CHANGELOG.md
provider/aws: allow external ENI attachments
Update AWS provider documentation
docs/aws: Fix example of aws_iam_role_policy
provider/aws: S3 bucket test that should fail
provider/aws: Return if Bucket not found
Update CHANGELOG.md
Update CHANGELOG.md
helper/schema: record schema version when destroy fails
settings file is not required
provider/azure: Allow settings_file to accept XML string
add note to aws_iam_policy_attachment explaining its use/limitations
docs: clarify template_file path information
google: Sort resources by alphabet in docs
Support go get in go 1.5
Update CHANGELOG.md
aws_network_interface attachment block is not required
provider/aws: Fix issue in Security Group Rules where the Security Group is not found