Update git submodules

Update git submodules

* Update docs/submodules/octopus from branch 'master'
  - Merge "Template for scenario descriptor file (sdf) and an example"
  - Template for scenario descriptor file (sdf) and an example

    Patchset 1: Initial version
    Patchset 2: Important comments resolved, adding info about
    optional/mandatory, and better syntax for hardware options.
    Patchset 3: Resolving comments. Some comments marked with #$$$$
    where things need discussion on hackfest.
    Patchset 4: more comments resoved, provided alternate syntax proposal
    using role definitions for nodes to define ha and noha.
    Patchset 5: small correction
    Patchset 6: more comments resolved, changes discussed on hackfest done.

    Jira OCTO-162

    Change-Id: I54e3450f04e4dcb6bc9b5efa36f2c8aa3f7617b0
    Signed-off-by: ulik <ulrich.kleber@huawei.com>