Update git submodules

* Update docs/submodules/dmaap/datarouter.git from branch 'master'
  to 8f28bfe406b657c924440dcee6e3d7b302ce639c
  - Merge "Adding to unit test coverage"
  - Adding to unit test coverage
    
    Change-Id: Id8d07c94bb70952fb317bfc7824fc0d587087468
    Issue-ID: DMAAP-1203
    Signed-off-by: efiacor <fiachra.corcoran@est.tech>
    
1 file changed