Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 6969393c445e5a86a6e788cff989c4af06ca84ad
  - Merge "Improve kubectl role testability."
  - Improve kubectl role testability.

    Move kubectl related functionality from rancher role to kubectl role
    and change order of execution in playbook to satisfy kubectl role
    dependency to rancher role regarding server value inserted into
    kubeconfig file.

    Introduced defaults and moved technical variables from group_vars
    into role defaults.

    Issue-ID: OOM-1730

    Change-Id: I6339664ba52928566487edcdca8a3b42db86eeed
    Signed-off-by: Samuli Silvius <s.silvius@partner.samsung.com>

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 0e09d07..6969393 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 0e09d07622d1793cc016c1021322008bbf6184a5
+Subproject commit 6969393c445e5a86a6e788cff989c4af06ca84ad