Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "Create the basic structure for generic scenarios"
  - Create the basic structure for generic scenarios

    Change-Id: I158d4e61e627e47ffa89d8229280011a2b615cac
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 182e3b0..c9d974c 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 182e3b080b6e0f9cf7c1c9df31d22baef5f12456
+Subproject commit c9d974c65f29c07732586e7f5560ccc390142cd6