Update Go AWS SDK to the latest version

vendor/github.com/aws/aws-sdk-go/internal/sdkuri/path_test.go

@@ -0,0 +1,21 @@
+package sdkuri
+
+import "testing"
+
+func TestPathJoin(t *testing.T) {
+	cases := []struct {
+		Elems  []string
+		Expect string
+	}{
+		{Elems: []string{"/"}, Expect: "/"},
+		{Elems: []string{}, Expect: ""},
+		{Elems: []string{"blah", "el", "blah/"}, Expect: "blah/el/blah/"},
+		{Elems: []string{"/asd", "asdfa", "asdfasd/"}, Expect: "/asd/asdfa/asdfasd/"},
+		{Elems: []string{"asdfa", "asdfa", "asdfads"}, Expect: "asdfa/asdfa/asdfads"},
+	}
+	for _, c := range cases {
+		if e, a := c.Expect, PathJoin(c.Elems...); e != a {
+			t.Errorf("expect %v, got %v", e, a)
+		}
+	}
+}