Update git submodules

* Update docs/submodules/pharos from branch 'master'
  - Provide opendaylight server with a public ip

    JIRA: FUEL-393

    This patch reserves a public ip for opendaylight. This ip is needed
    for running the test-case 3 of sdnvpn test-cases, which run as part
    of the bgpvpn scenario.

    Change-Id: I57288bbb42f4c75af19f3807f8f15b44482c066c
    Signed-off-by: Stamatis Katsaounis <mokats@intracom-telecom.com>

diff --git a/docs/submodules/pharos b/docs/submodules/pharos
index 754f994..504ca26 160000 (submodule)
--- a/docs/submodules/pharos
+++ b/docs/submodules/pharos
@@ -1 +1 @@
-Subproject commit 754f994c0337402e7983a0cb12a6ed692a1a1cca
+Subproject commit 504ca267fc2c17326ea31a280c4d6d91e2914e11