Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Local Documentation Builds"
  - Local Documentation Builds
    
        This adds configuration for performing local documentation builds
        with the following simple command:
    
        tox -e docs
    
    added index.rst so that docs build succsesfully
    
    Change-Id: Iab747c90f7f4b7866270c5850b2792e194b5378a
    Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
-Subproject 630875f0ac88239f0b9207312793f4d39a5e36b
+Subproject 12bdf4134e0d627b96540f514d479600f73a854