Update git submodules

* Update docs/submodules/so.git from branch 'dublin'
  to 16c6cc1e5cdaad24b92114ebf6c5396453194778
  - Merge "exception handling" into dublin
  - exception handling

    Update the appc client jar version
    Throw exception for non success cds call
    Fix CreateVcpeResCustServiceSimplifiedTest IT

    Issue-ID: SO-1857 SO-1779
    Change-Id: Ifee080600051c92fd964a92d16efb67e4ab05d5d
    Signed-off-by: eeginux <henry.xie@est.tech>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 864ce56..16c6cc1 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 864ce56c3daff6a6a1f4b9ae1ebcb24c2aa87f2a
+Subproject commit 16c6cc1e5cdaad24b92114ebf6c5396453194778