Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'dublin'
  to ac20a622520d1126de2c09b355aaba610f374bcc
  - Add .gitreview

    It eases configuring remote via git-review -s

    Issue-ID: DOC-505

    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    Change-Id: I2f82f8797669d1bf9e0bbefcbb345ce4e463a60a
    (cherry picked from commit 5160acf7baf7fdb6364dee4cea8c9198e067aaee)

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 0573ab2..ac20a62 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 0573ab24eb85e428cb1f1bb80b9956b1a790dcc6
+Subproject commit ac20a622520d1126de2c09b355aaba610f374bcc