Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Removed floating IP list from OpenStackVmInstance.

    There was a list and dict both holding the same floating IP
    objects which has been problematic especially when trying
    to initialize the object with a VM instance that already
    exists.

    JIRA: SNAPS-149

    Change-Id: If4af6dfef04a40b9c8cd7a8add484c9ec03f1ef8
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index ca276f4..84c4e79 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit ca276f452540f68c08cb3df9049e9e7876364dac
+Subproject commit 84c4e791b6ea4e6d488acf29491ef8c901011aa3