Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 4fbf064cd826f350174c6f80ee9f4614b5aaf113
  - Change name of clashing 'packages' variables

    This fixes a regression from b6455ee: 'packages' variable
    is injected in 'firewall' role by package_facts module with
    a higher priority than variable of same name defined in 'docker'
    roles' defaults.

    Change-Id: I41e0f992ceaab871ae38fb1b8211fd71c042c9b2
    Issue-ID: INT-1578
    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 ae8a51d..4fbf064 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit ae8a51df158d28e647d551ed02530951715d6a3a
+Subproject commit 4fbf064cd826f350174c6f80ee9f4614b5aaf113