Update git submodules

* Update docs/submodules/netvirt from branch 'master'
  to cba2c4f55a16af012d4c762e658130f9016da548
  - sfc-classifier: use transaction manager

    This replaces all direct invocations of
    DataBroker::newWriteOnlyTransaction() with calls to a
    ManagedNewTransactionRunner, ensuring all such transactions are
    closed.

    Change-Id: I2852263856984b0228added475a99cb023fc962c
    Signed-off-by: Stephen Kitt <skitt@redhat.com>

diff --git a/docs/submodules/netvirt b/docs/submodules/netvirt
index 73a7895d19e790cd270d512987739a0e05c6caba..cba2c4f55a16af012d4c762e658130f9016da548 160000 (submodule)
--- a/docs/submodules/netvirt
+++ b/docs/submodules/netvirt
@@ -1 +1 @@
-Subproject commit 73a7895d19e790cd270d512987739a0e05c6caba
+Subproject commit cba2c4f55a16af012d4c762e658130f9016da548