s3 cache client-side support

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

vendor/github.com/aws/aws-sdk-go-v2/internal/sdk/interfaces.go

@@ -0,0 +1,9 @@
+package sdk
+
+// Invalidator provides access to a type's invalidate method to make it
+// invalidate it cache.
+//
+// e.g aws.SafeCredentialsProvider's Invalidate method.
+type Invalidator interface {
+	Invalidate()
+}