Update git submodules

* Update docs/submodules/vid.git from branch 'master'
  to 6a4bbd8dded066fae4bc034d65a059e41b06661e
  - UT - requestId is same in next call but invocationId is different
    
    Issue-ID: VID-253
    Signed-off-by: Eylon Malin <eylon.malin@intl.att.com>
    Change-Id: I3c07a26b2644435ca530466f47fb3b77d01dcbe4
    
1 file changed