Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Created new exceptions for security group settings"
  - Created new exceptions for security group settings

    Raising SecurityGroupSettingsError in SecurityGroupSettings
    and SecurityGroupRuleSettingsError in SecurityGroupRuleSettings
    instead of Exception.

    JIRA: SNAPS-137

    Change-Id: I959ffe9a247dc9adffbef460119ba94ad86fd3f0
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index a2b4763..c613a9a 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit a2b4763d5fe13bfe47de0d44e7d7c519f1084215
+Subproject commit c613a9a564035e97da15152789371d9d9ae6041d