Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Revert "CPERF: Fix csit odltools install""
  - Revert "CPERF: Fix csit odltools install"

    This reverts commit 38ca028551d2e498fdfe41627f8bf79a43a6a0fa.

    Change-Id: If37f0d40a50b410004d563bed5887f8237110d44

diff --git a/docs/submodules/releng b/docs/submodules/releng
index aa33ff0..756f883 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit aa33ff0331781c277743ab6a1a5260a2b8ad4497
+Subproject commit 756f883cf0f477cfc9bd20776eb3bad49a4ff61e