Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to fb5a7ef7ff903373800b44e3c219e49a3b532b27
  - Merge "Removed null checks from ResourceRequestBuilder"
  - Removed null checks from ResourceRequestBuilder

    Removed unnecessary null checks from ResourceRequestBuilder
    according to comments from https://gerrit.onap.org/r/#/c/87001/

    Change-Id: I21140d812982713229c322d772e6a10f7c7c044d
    Issue-ID: SO-1498
    Signed-off-by: Robert Bogacki <r.bogacki@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 0b06cfe..fb5a7ef 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 0b06cfe120e4561143af82c6a0fcd07a6cb9d130
+Subproject commit fb5a7ef7ff903373800b44e3c219e49a3b532b27