Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to d5a7006356a2f22a6e247fd96be7b06f67b1b573
  - Merge "JUnit tests for RequestsDBHelper"
  - JUnit tests for RequestsDBHelper
    
    Increased junit tests coverage according to Sonar analyses.
    
    Change-Id: I66a513d664122c1a37e64dc6eca533590b16d48c
    Issue-ID: SO-1692
    Signed-off-by: Robert Bogacki <r.bogacki@samsung.com>
    
diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 7c9df24..d5a7006 160000
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7c9df24c78e9bf609cdf571d84c68fe9df4e0877
+Subproject commit d5a7006356a2f22a6e247fd96be7b06f67b1b573