Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to b5fe8a69e90b950c07dc11af481eab7e9bab52c6
  - Change code in appc dispatcher for new LCMs in R6
    
    Also introduce some minor improvements to robustness, efficiency, & formatting.
    
    Issue-ID: APPC-1789
    Signed-off-by: Dunietz, Irwin <id1681@att.com>
    Change-Id: I82d970c2f7cde6c8dab1222af86ea70ce93b7e50
    
1 file changed