Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to efa8de7e27bf355586e51a18008d8c6727d1e743
  - Merge "Add existing vnf customization for service"
  - Add existing vnf customization for service

    Add existing vnf customiation for service if they are exit in db.
    Otherwise vnf_resource_customization_to_service will hold only
    last process VF while parsing.

    Change-Id: I52ea9dec58630e61eae88e7c9325aa37d64c00d6
    Issue-ID: SO-1805
    Signed-off-by: subhash kumar singh <subhash.kumar.singh@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 08e14dc..efa8de7 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 08e14dc13657fa700a5f89b8cab3f7199a071c15
+Subproject commit efa8de7e27bf355586e51a18008d8c6727d1e743