Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 3c6f676f8f50ac796804900c0ba1e3d9ffc1ff29
  - Downloading docker images does not work on Windows

    Changing build/download/docker_downloader.py to connect
    docker engine in more default way i.e. taking engine
    parameters from environment fixes this script.

    Issue-ID: OOM-2223

    Signed-off-by: Samuli Silvius <s.silvius@partner.samsung.com>
    Change-Id: Iddf69593bb4cf4596e713c8d537a90424c5925ef

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index cb93bce..3c6f676 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit cb93bcee2dc49826964f8400420fe6d375ed3662
+Subproject commit 3c6f676f8f50ac796804900c0ba1e3d9ffc1ff29