Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to ce19da38780453d5e3d945d958948fe2d02c50b4
  - Merge "remove vnfadapterrest flow and interface"
  - remove vnfadapterrest flow and interface

    Removed unused soap vnf adapter apis and implements
    Removed unused apis and implements from vnf adapter
    Updates and removed dead code that is never used
    Add back override method to the healthcheck in vnf imp
    Removed the vnfadapter rest v2 interface and test.
    Removed references to v2 rest interfaces from CXF config.
    Reverted change to the cxf configuration file.
    Removed more unused code and updated unit test to account for removed
    apis and v2 being removed
    Updated the att openstack adapter cfx to remove v2 classes
    Initial commit of cleaning up the vnf adapter and removing the rest
    subflow.

    Issue-ID: SO-2812
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: Ia093a5ac2dffd21d27a1ba74a813198b806d0786