Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 86f02709899266d61d51d1756b9cbb4a40ea3fb4
  - added file to test RequestModel.java
    
    to increase code coverage
    
    Issue-ID: APPC-1086
    Change-Id: If2270ea76a0a15ae7c6f5d1d580512456be198fd
    Signed-off-by: Sandeep J <sandeejh@in.ibm.com>
    
1 file changed