Updated git submodules

Project: so master 1b9f60bf292b24a33df33cedacad83bb868b450c

Merge "Sonar blocker issue - NullPointerExeption"

Sonar blocker issue - NullPointerExeption

use the try-with-resource statement method to fix issues:
https://sonar.onap.org/issues/search#issues=AV3BnuCb5bp_wwmIVClC
and https://sonar.onap.org/issues/search#issues=AV7t547AlaLbmlVXT_jY

Change-Id: I912be949793066bef6e3036fb474247d4d269e4f
Issue-ID: SO-165
Signed-off-by: Zhu Libo <libo.zhu@intel.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index c1ea024..1b9f60b 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit c1ea02430b19245a8fc8a64b7e5644dd0caadc2f
+Subproject commit 1b9f60bf292b24a33df33cedacad83bb868b450c