Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to c59de000d948ce0d6861a0724642249b4af3821e
  - added test cases to TestVServerInfo.java
    
    to increase code coverage
    
    Issue-ID: APPC-1086
    Change-Id: Ib6fb537e576f928552763ec0e6d1abf2d556f00a
    Signed-off-by: Sandeep J <sandeejh@in.ibm.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 0b1b38d..c59de00 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 0b1b38d7e059598e8935fb3c38a45b51bd3a1411
+Subproject commit c59de000d948ce0d6861a0724642249b4af3821e