Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to f677f922e672d1e9bab0ae55e4ce7ee814680554
  - Merge changes Iea43b256,Ibabb3f5e,I65623121

    * changes:
      update the interface flows in SO
      Fix the FAQ page location
      update SO release notes in readthedocs

  - update the interface flows in SO

    Issue-ID: SO-675

    Change-Id: Iea43b256422af69e6dcbbdb9282a125a6bfef0e8
    Signed-off-by: seshukm <seshu.kumar.m@huawei.com>
  - Fix the FAQ page location

    Issue-ID: SO-675

    Change-Id: Ibabb3f5e2c381f6bd7772aaed50a44e556460815
    Signed-off-by: seshukm <seshu.kumar.m@huawei.com>
  - update SO release notes in readthedocs

    Issue-ID: SO-675

    Change-Id: I65623121b952ad88d48c196fc45d05fae28de4b1
    Signed-off-by: seshukm <seshu.kumar.m@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 71e617b..f677f92 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 71e617b9e2fcd24c05579bf41e65db4273f05e77
+Subproject commit f677f922e672d1e9bab0ae55e4ce7ee814680554