Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 4f7af8bab030fc3d331816a706dd0a9e2974c455
  - Merge "Sonar Fix: SDNCAdapterApplication.java"
  - Sonar Fix: SDNCAdapterApplication.java
    
    Removed unused imports from the file
    
    Issue-ID: SO-2103
    Change-Id: Id126f5203789d866b340d86b55bbc616991afc99
    Signed-off-by: Arundathi Patil <arundpil@in.ibm.com>
    
diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 781ae82..4f7af8b 160000
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 781ae827294edc8e9a25d1ac83d7399be8186e8b
+Subproject commit 4f7af8bab030fc3d331816a706dd0a9e2974c455