Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 8ef504fa4b7117af1138d653106c9aa328d0522a
  - Merge "fix critical sonar bugs"
  - fix critical sonar bugs

    Restore interrupted state when InterruptedException is thrown in SDNCRestClient
    Added test for this case
    Replaced formatting anchor with text empty object in GraphInventoryResultWrapper
    Escaped anchor is also considered as bug by sonar
    Case is already covered in AAIResultWrapperTest
    Marked comparison of the same object as false positive in EqualsAndHashCodeTester
    Added clearer comment to this comparison

    Change-Id: I24496c2323c33599db99a3d3b59fc4f6a008cf1f
    Issue-ID: SO-1492
    Signed-off-by: k.kazak <k.kazak@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index dbd5bb9..8ef504f 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit dbd5bb99cd6a6c8a7465acb31468a07f2523f188
+Subproject commit 8ef504fa4b7117af1138d653106c9aa328d0522a