Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Reduce flavor resources of heat template

    In order to pass the HeatUtilsCreateComplexStackTests
    request an affordable amount of compute resources.

    Change-Id: I7d99435ce9500cc96e2e25828f1a804687df69e0
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 6229af3..14b6578 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 6229af39550dfef0b44f79b5d17c184bb098e692
+Subproject commit 14b6578d2d40a3335d361ad234accb804245e3e4