Update git submodules

* Update docs/submodules/pharos from branch 'master'
  - Merge "modify admin network segment of zte pod1"
  - modify admin network segment of zte pod1

    The previous network segment conflicts with INSTALLER_IP.

    Change-Id: I160c2ee368f716d13510bfea69e2dc453d164276
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/pharos b/docs/submodules/pharos
index 60b29f9..ac2b2bd 160000 (submodule)
--- a/docs/submodules/pharos
+++ b/docs/submodules/pharos
@@ -1 +1 @@
-Subproject commit 60b29f9b9b265b231f1990877e7042a84508db50
+Subproject commit ac2b2bdddb422cbaceaf4fb3c4139dd44f8fa02e