Update git submodules

* Update docs/submodules/dmaap/datarouter.git from branch 'master'
  to cf55456bbe6ce4da723f9dfa64b573f02908ab24
  - Remove checkstyle syntax warnings from dr-node
    
    Change-Id: I79c76277bbf4df2494a12d3558900bbbad605931
    Issue-ID: DMAAP-1195
    Signed-off-by: econwar <conor.ward@est.tech>
    
1 file changed