Update collection-strawman to master version

OlivierBlanvillain · OlivierBlanvillain · commit 686ff5db301e · 2018-08-23T12:53:42.000+02:00
diff --git a/collection-strawman b/collection-strawman
@@ -1 +1 @@
-Subproject commit abd20a60f730ef478551ee68ed4326f8bf582dd8
+Subproject commit 58fd6b002889d071e12223c403cdf8d82b43c298
