Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [ovs/dpdk] Mend dpdk settings

    * add vcpus to virtual compute
    * re-pin dpdk core & pmds
    * switch to UCA repos
    * disable apt-daily cron job

    Change-Id: Ia23100b846d8954e3d5e8a264a6b8518402b2fa6
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index ac7bb38..32b75cc 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit ac7bb381c5376c28b0eeac880af90b50a2801f38
+Subproject commit 32b75cc293bf0402302ee674a0a0064456d219c7