Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "docs: Fix env var OPNFV_RELENG_DEV_PATH"
  - docs: Fix env var OPNFV_RELENG_DEV_PATH

    Change-Id: I95fd4efe4d1a47ce682489ffd7c2ce588a1764e5
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 9ccb1ff..fbf3610 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 9ccb1ffde5ca9db907b52e2f36323a83a0b6a785
+Subproject commit fbf3610e777a6f66e7457f7fc40a5f996ecef023