Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 3cb99d8d6d8b74cedb7b5da917d48166762a0d84
  - update document for new LCMs
    
    update document for new LCMs
    
    Issue-ID: APPC-1778
    Change-Id: I98ebaffe91f6ae162b0eab66bd6fded47039ce45
    Signed-off-by: Taka Cho <takamune.cho@att.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 3459b8c..3cb99d8 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 3459b8ceb782ab6cb582c1f8e085088016c91d33
+Subproject commit 3cb99d8d6d8b74cedb7b5da917d48166762a0d84