Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Opened up API to allow for playbook application to localhost
    by making the user, password, and private key attributes optional.

    Change-Id: I7e1e2b5848730ae5febde7d7243e741c87e5c7ea
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 4f8fae8..bee558d 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 4f8fae85f9fa6b7a82189b6f68f0ac1d70949611
+Subproject commit bee558d02691fc16824cf6dae06e9daaa6a92c8a