Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Added method to return OpenStackVmInstance from Heat."
  - Added method to return OpenStackVmInstance from Heat.

    OpenStackHeatStack now can introspect the VMs that the template
    was responsible for deploying and return an instanitated instance
    of OpenStackVmInstance for each VM deployed. When the VM has a
    Floating IP, these instances have the ability to connect via
    SSH just like one created from scratch.

    JIRA: SNAPS-172

    Change-Id: I5a7ed3a09bb871afc55c718aa80a9069b1eb4da7
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 1ac3fef..23b3a1f 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 1ac3fefd616758779fc1489b5fee8689ec2487d9
+Subproject commit 23b3a1f209ee613982de9e759b1879d771b91f5c