Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to cdd93f561042f5ee4df72895e33bc02a122d5104
  - Merge "Support time synchronization on hosts"
  - Support time synchronization on hosts

    This change introduces functionality to synchronize
    infra/kube nodes' clock with external NTP authority.

    Configuring external time source is optional, however
    default behaviour will be to setup NTP time source on
    infra-node and sync kube-nodes clock with it.

    It's also possible to setup custom time zone.

    Change-Id: I725ce9a306da1977628b6c03d5ff10fca77fb3b0
    Issue-ID: OOM-1710
    Signed-off-by:  Bartek Grzybowski <b.grzybowski@partner.samsung.com>

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 6969393..cdd93f5 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 6969393c445e5a86a6e788cff989c4af06ca84ad
+Subproject commit cdd93f561042f5ee4df72895e33bc02a122d5104