Merge pull request #6487 from gerrit-photon/master

Update photon image

library/photon

@@ -15,6 +15,6 @@ Tags: 1.0, 1.0-20190802
 GitFetch: refs/heads/1.0-20190802
 GitCommit: 22d3fc335b561fa6ab788643138210803822f72a
 
-Tags: 2.0, 2.0-20190802
-GitFetch: refs/heads/2.0-20190802
-GitCommit: 3f4516d360307edea745b35915c37a9f1c5faa51
+Tags: 2.0, 2.0-20190816
+GitFetch: refs/heads/2.0-20190816
+GitCommit: 5017897e926078347f1972738d86b3a7dfcaf4c7