Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 7c1131e5b46160a1ba4ee52d59b4650cdc1a4c9d
  - Add ability to put dockerdata-nfs on root disk

    Modify the heat template so that it becomes possible to
    skip volume creation for dockerdata-nfs.
    This feature can be toggled at will. It is useful for the cases
    where /dockerdata-nfs needs to be fast, but there are no ssd volumes available.
    Of course, large enough ephemeral disks are needed, around
    60 gb.

    Change-Id: I37e29e7cf7273d1d4a6e896ec017d9ef8177b1d0
    Issue-ID: OOM-2042
    Signed-off-by: Michal Zegan <m.zegan@samsung.com>
  - Make kubernetes nodes to be placed on different computes

    Modify the heat template so that kubernetes node
    instances are not placed on the same compute nodes, but each on a different node.
    This is called anti-affinity.

    Change-Id: I16cad7cc2f503130bae80be3820c477890214594
    Issue-ID: OOM-2042
    Signed-off-by: Mateusz Pilat <m.pilat@partner.samsung.com>
    Signed-off-by: Michal Zegan <m.zegan@samsung.com>
  - Change the way how volume map is constructed

    This commit modifies volume handling in heat template in cicdansible.
    Namely, it simplifies the generation of node to volume list mapping and makes it
    more readable and understandable, and also
    more flexible, because now parts of it could be
    conditionalized. This is required for a followup commit.

    Change-Id: I204aefd819f40050a2cb9e6a031dfb2c62da1f48
    Issue-ID: OOM-2042
    Signed-off-by: Michal Zegan <m.zegan@samsung.com>

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 1da8b7a..7c1131e 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 1da8b7af533aa48450d42219f0615d0bb510da4a
+Subproject commit 7c1131e5b46160a1ba4ee52d59b4650cdc1a4c9d