Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to d6524736ae0061154694d3cd182c122c162bee35
  - Test coverage in ssh adapter
    
    Increased coverage of sshadaptersshd and sshconnection classes
    
    Issue-ID: APPC-1416
    Change-Id: I706f942f87d4497f35b2584c1360d571b43eba6c
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
    
1 file changed