Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 3534e7089c955406866bd8e796a8f5e40b08100b
  - Notification and Subscription filters

    Ve-Vnfm (SOL002) Adapter project
    - checking if VNF Id is registered in AAI
    - checking if list from ESR is not null
    - sending the filter in subscription

    Issue-ID: SO-2574
    Signed-off-by: Piotr Borelowski <p.borelowski@partner.samsung.com>
    Change-Id: Iad2c5d9bc2921221fcf0304db73baee6bbaa0c77

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index d547a6a..3534e70 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit d547a6a5d8bb9b19cbb4c01e889df6b55f309035
+Subproject commit 3534e7089c955406866bd8e796a8f5e40b08100b