Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge changes from topic 'fix-public-bridge'

    * changes:
      [virtual] Add missing ODL dhcp_int
      [virsh net] public: rm addr cfg for pure baremetal

  - [virtual] Add missing ODL dhcp_int

    - add missing network definitions for ODL node's 1st interface;
    - add missing comments for `notify` global functions;
    - fix or silence shellcheck issues;

    JIRA: FUEL-322

    Change-Id: Ie3341d29ab12ddf432db603ad865259afb54714e
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
  - [virsh net] public: rm addr cfg for pure baremetal

    To prevent adding a gratuitous requirement on public being a real
    Linux bridge on the jumpserver when baremetal nodes are present,
    stop configuring any IP address information for the public virsh
    network, allowing us to keep mocking it like we did before L3
    information was read from IDF.

    JIRA: FUEL-339

    Change-Id: Id09ecac14825a80a0770c5969afad79b0235e08e
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 22bbdf2..624e0e3 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 22bbdf21851c3fdeb10579fc6b0e77a93e90e813
+Subproject commit 624e0e31debf1b4f7fa7727826e6e385c6192583