Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Pass flavor metadata into heat template

    Change-Id: I660c7421c9c43d4603cf05489ca39f781467e3a1
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index d75a136..0dacfaa 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit d75a13621de68b122189301a761b3802f9b86ef1
+Subproject commit 0dacfaa2fbd2dfe7fc9d438b9350a0187506e61c