Update git submodules

* Update docs/submodules/modeling/modelspec.git from branch 'master'
  to c3d5a1cc8beab918784defc6fad89e450785de30
  - Very slight update to Service
    
    Updated relationship between ServiceOrder and BusinessInteraction /
    Request
    
    Issue-ID: MODELING-104
    
    Change-Id: I59cc33ba119d3e5d3456d2297ef957b1f9a1a8fd
    Signed-off-by: Kevin Scaggs <ks0567@att.com>
diff --git a/docs/submodules/modeling/modelspec.git b/docs/submodules/modeling/modelspec.git
index 2ec88ac..c3d5a1c 160000
--- a/docs/submodules/modeling/modelspec.git
+++ b/docs/submodules/modeling/modelspec.git
@@ -1 +1 @@
-Subproject commit 2ec88acc71c49e54d96066efae285da130453534
+Subproject commit c3d5a1cc8beab918784defc6fad89e450785de30