Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Created new class KeystoneException"
  - Created new class KeystoneException

    Raising KeystoneException in keystone_utils.py instead of Exception

    JIRA: SNAPS-127

    Change-Id: Ife37c9df79c5c85dfdb07e239268c05b7c9a91bd
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 39328c7..0f47ac4 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 39328c7d6f0582124b61a6c18fa10d8d245eecf2
+Subproject commit 0f47ac44b59932544c45bd6df82a31aedb85b16f