Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 092082fafbe995283e7049a0b67a6736c71a3ed5
  - Rather leverage https for git operations

    Failed to connect to repository : Command "git ls-remote -h -- ssh://fbot@gerrit.opnfv.org:29418/releng HEAD" returned status code 128:
    stdout:
    stderr: Host key verification failed.
    fatal: Could not read from remote repository.

    Please make sure you have the correct access rights
    and the repository exists.

    Change-Id: I93f97ba354e9fe0e7048e499f5c3e1ca33122162
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>