Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - First of several patches for adding volume support.

    * Added volume API version attribute to OSCreds
    * Created utility for interfacing with the Cinder APIs
    * Created QoS creator
    * Added new tests to test_suite_builder.py

    JIRA: SNAPS-195, SNAPS-194

    Change-Id: I0c6a53b4cba6efea3e92d909b94b259fa07a35c3
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 8810b59..5301535 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 8810b59c9a3a61013398bac256b84bbb365b4d87
+Subproject commit 530153597deb5030c296358431d9549d13b7288b