Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 093b48e4e697cc8db57c4b2a287f74db2a729aff
  - Merge "Add prepare-helm role"
  - Add prepare-helm role

    This role downloads helm and places it in resources dir.
    It is needed for testing helm role.

    Change-Id: Ic7357f96d654a51592c332e4b61b0fe46a39270a
    Issue-ID: OOM-1909
    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 70e8bfa..093b48e 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 70e8bfada11bfaf866936af28523613b21ce3d59
+Subproject commit 093b48e4e697cc8db57c4b2a287f74db2a729aff