Updating AWS-SDK-Go to version 1.38.49

This commit is for all the vendor specific code changes introduced
by pinning the dependency at 1.38.49 and running update-vendor.sh

lint-dependencies.sh shows no issues

vendor/github.com/aws/aws-sdk-go/service/ec2/doc.go

@@ -4,8 +4,14 @@
 // requests to Amazon Elastic Compute Cloud.
 //
 // Amazon Elastic Compute Cloud (Amazon EC2) provides secure and resizable computing
-// capacity in the AWS cloud. Using Amazon EC2 eliminates the need to invest
+// capacity in the AWS Cloud. Using Amazon EC2 eliminates the need to invest
 // in hardware up front, so you can develop and deploy applications faster.
+// Amazon Virtual Private Cloud (Amazon VPC) enables you to provision a logically
+// isolated section of the AWS Cloud where you can launch AWS resources in a
+// virtual network that you've defined. Amazon Elastic Block Store (Amazon EBS)
+// provides block level storage volumes for use with EC2 instances. EBS volumes
+// are highly available and reliable storage volumes that can be attached to
+// any running instance and used like a hard drive.
 //
 // To learn more, see the following resources:
 //
@@ -13,7 +19,7 @@
 //    EC2 documentation (http://aws.amazon.com/documentation/ec2)
 //
 //    * Amazon EBS: Amazon EBS product page (http://aws.amazon.com/ebs), Amazon
-//    EBS documentation (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.html)
+//    EBS documentation (http://aws.amazon.com/documentation/ebs)
 //
 //    * Amazon VPC: Amazon VPC product page (http://aws.amazon.com/vpc), Amazon
 //    VPC documentation (http://aws.amazon.com/documentation/vpc)