Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 0f19fd0521a0e70ec82fc1676d03546ff4dad8a7
  - added test cases to MetricRegistryImpl.java
    
    to increase code coverage
    
    Issue-ID: APPC-1086
    Change-Id: I8804c14c88fe0857be7106edd621ee74f4dd1243
    Signed-off-by: Sandeep J <sandeejh@in.ibm.com>
    
1 file changed