Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 56416d09c3d5b73e47d6c769078698d13ad14690
  - Merge "Adding generating of docker images list"
  - Adding generating of docker images list

    Adding a note to BuildGuide with the possibility to generate docker
    images list based on actual OOM repository

    Issue-ID: OOM-1965

    Change-Id: I93c9f754f6bd135396eedefeba22c8be6f77388d
    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 2eb3ad6..56416d0 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 2eb3ad6df751029e5ec6c61f910627dfd81ab278
+Subproject commit 56416d09c3d5b73e47d6c769078698d13ad14690