Updated git submodules

Project: so master 6c5da4d9bdba23392a92fd70c3a735d80cb64b10

Merge "Adding Junit"

Adding Junit

Junit for CallbackHeader.java

Sonar link:
https://sonar.onap.org/code?id=org.openecomp.so%3Aso&selected=org.openecomp.so.adapters%3Amso-sdnc-adapter%3Asrc%2Fmain%2Fjava%2Forg%2Fopenecomp%2Fmso%2Fadapters%2Fsdnc%2Fclient%2FCallbackHeader.java

Change-Id: Ic539c486d703f8376257b8bbc2166a3054c8007e
Issue-ID: SO-446
Signed-off-by: AS00465059 <AS00465059@techmahindra.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 5066a08..6c5da4d 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 5066a084fc0fead2c14fed9885f52dd7980e3492
+Subproject commit 6c5da4d9bdba23392a92fd70c3a735d80cb64b10