Update git submodules

* Update docs/submodules/cli.git from branch 'master'
  to 8a4cee1a4fa40433d343c10dce507e5c03eabfbd
  - Update VFC command line about vfc-nslcm-get-ns-descriptors

    Change-Id: I43fad3959b4699defbef24bf01adf3dd77e72d84
    Issue-ID: CLI-171
    Signed-off-by: yangyan <yangyanyj@chinamobile.com>
  - Update cli command about vfc-nslcm-delete-ns-descriptors

    Change-Id: Ia103726c3961e64422aed2e6fb386f41c0be98bc
    Issue-ID: CLI-171
    Signed-off-by: yangyan <yangyanyj@chinamobile.com>
  - Update VFC cli command about vfc-nslcm-query-multinslcmopoccs

    Change-Id: Ife284ac1fa5666f189c855b126151a1d4dea86bd
    Issue-ID: CLI-241
    Signed-off-by: yangyan <yangyanyj@chinamobile.com>

diff --git a/docs/submodules/cli.git b/docs/submodules/cli.git
index 9a297ee..8a4cee1 160000 (submodule)
--- a/docs/submodules/cli.git
+++ b/docs/submodules/cli.git
@@ -1 +1 @@
-Subproject commit 9a297ee68f101fc0b5f8965b1d7d318cb2759920
+Subproject commit 8a4cee1a4fa40433d343c10dce507e5c03eabfbd