Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 7acc80b895555184f4fc011d32dd509e10e4e1ac
  - Merge "Lower code duplication of AaiClient calls in BBInputSetupUtils"
  - Lower code duplication of AaiClient calls in BBInputSetupUtils

    Introduce generic method for retrieving concrete resource of given type from Aai

    Issue-ID: SO-2634
    Signed-off-by: Remigiusz Janeczek <remigiusz.janeczek@nokia.com>
    Change-Id: I33e247154961ff50fa81845158229413a9d81bfe

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 2f49788..7acc80b 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 2f497888bfcc70a6982843454e346c46ee02ce78
+Subproject commit 7acc80b895555184f4fc011d32dd509e10e4e1ac