Update git submodules

* Update docs/submodules/dmaap/datarouter.git from branch 'master'
  to e8ba88b7d2529442c0f80eee6aa200716c0e72a1
  - Bump latest image version
    
    Signed-off-by: efiacor <fiachra.corcoran@est.tech>
    Change-Id: I1324d0258ff0637101ade5aa4374a2e51084f550
    Issue-ID: DMAAP-1420
    
1 file changed