Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 4c22df0d4d5edf7551e0767f1bab8cde67cf0a35
  - Merge "corrected CompareModelofE2EServiceInstance.groovy"
  - corrected CompareModelofE2EServiceInstance.groovy

    groovy file correction

    Issue-ID: SO-2212

    Signed-off-by: anjali.walsatwar <anjali.walsatwar@huawei.com>
    Change-Id: I42b005210df986b1a4f006982f9d89be54bffa7f

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index ceac74f..4c22df0 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit ceac74f3e71d46120da85257351432f367cc48d6
+Subproject commit 4c22df0d4d5edf7551e0767f1bab8cde67cf0a35