Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Update requirements_absolute_requirements.txt"
  - Update requirements_absolute_requirements.txt

    JIRA: -

    For offline deployment, some packages' versions need to be
    upgraded and add the version limitation of tacker and tacker
    client.

    Change-Id: I8b55fe270998c716df8791f1909ea4f4ab654a6c
    Signed-off-by: Yifei Xue <xueyifei@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 93d66a8..776e32b 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 93d66a8a89e0195bce06b88780a5800a1474142f
+Subproject commit 776e32b0068535b65b29c52e39167962ef9a90f8