Update git submodules

* Update docs/submodules/modeling/modelspec.git from branch 'master'
  to c16ffac87585a881393e269c3592e4a295a78a75
  - Update to Common

    Finalized a draft root proposal and created a shell location package
    with a place class referenced in the root proposal.  There are a number
    of 'temporary' duplicate classes in the root proposal intentionally left
    in the diagrams package.   These will be deleted and replaced with the
    correct classes from various submodels when appropriate.

    Issue-ID: MODELING-104

    Change-Id: If837a150c2a13fcae6742cae1228238e19241243
    Signed-off-by: Kevin Scaggs <ks0567@att.com>

diff --git a/docs/submodules/modeling/modelspec.git b/docs/submodules/modeling/modelspec.git
index ddcd4f8..c16ffac 160000 (submodule)
--- a/docs/submodules/modeling/modelspec.git
+++ b/docs/submodules/modeling/modelspec.git
@@ -1 +1 @@
-Subproject commit ddcd4f8e48c4599dcde2951cacb6f716913c54a7
+Subproject commit c16ffac87585a881393e269c3592e4a295a78a75