s3 cache client-side support

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/aws/aws-sdk-go-v2/aws/runtime.go

@@ -0,0 +1,14 @@
+package aws
+
+// ExecutionEnvironmentID is the AWS execution environment runtime identifier.
+type ExecutionEnvironmentID string
+
+// RuntimeEnvironment is a collection of values that are determined at runtime
+// based on the environment that the SDK is executing in. Some of these values
+// may or may not be present based on the executing environment and certain SDK
+// configuration properties that drive whether these values are populated..
+type RuntimeEnvironment struct {
+	EnvironmentIdentifier     ExecutionEnvironmentID
+	Region                    string
+	EC2InstanceMetadataRegion string
+}