Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 6f42bd0de9f69673d1ae24089238004007f5e476
  - Merge "[SO] Enable use of Keystone v3"
  - [SO] Enable use of Keystone v3

    SO can handle keystone v3 but override file must be capable to handle
    this.
    If openStackKeystoneVersion is set to "KEYSTONE_V3" in
    so-catalog-db-adapter config part, SO will be able to use keystone v3
    for OpenStack

    Issue-ID: OOM-2221
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: I14db318d25842a08ef380f6edb708e26dae050ad