Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge changes from topic 'remove_openstack_dir'

    * changes:
      Remove openstack directory
      Remove create_instance_and_ip.py

  - Remove openstack directory

    It is useles right now and won't be used in the future.

    Change-Id: I9aa121544051f49f7e7e794ae3b2c4a9ea516e47
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>
  - Remove create_instance_and_ip.py

    JIRA: FUNCTEST-817

    Change-Id: Ib297ec656a19c9ea4e06c6f2e133ed514a1dbf35
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>