Update git submodules

* Update docs/submodules/pharos from branch 'master'
  - [IDF] zte-pod1: Remove br-mgmt

    All recent Fuel deploy attempts on zte-pod1 failed due to br-mgmt
    not being present (or up), although it is defined in IDF.
    Since this bridge is optional in the Fuel deployment process and
    mostly useful for manual debugging, let's remove it from idf.fuel.

    Change-Id: I130ec61427237f979f6a6212ca8c291ba203ef39
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/pharos b/docs/submodules/pharos
index 31435de..6320cb4 160000 (submodule)
--- a/docs/submodules/pharos
+++ b/docs/submodules/pharos
@@ -1 +1 @@
-Subproject commit 31435de5085f1a5bb9cf965cdbce005fc04781d1
+Subproject commit 6320cb4dace4da1ad24d0e09a786ef65c18ea0ca