Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 57cb2514857ab8aa19c4712e54b359552db3be67
  - Merge "extract subinterface_network_quantity from policy"
  - extract subinterface_network_quantity from policy

    - Removed duplicate code that was causing a NumberFormatException
    - Changed name from crTarget to policyNetworkCollection
    - Added code to check we are setting the quantity on the correct
    NetworkCollection
    - Added code to extract the subinterface_network_quantity from the
    nodeTemplate policy

    Change-Id: Id12fa0241f16bfd4467209f08af5068d57b2d049
    Issue-ID: SO-1510
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 1db92d8..57cb251 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 1db92d88de7e377d5af5c710b270b383960804b3
+Subproject commit 57cb2514857ab8aa19c4712e54b359552db3be67