Updated git submodules

Updated git submodules

Project: netvirt master a883688e2176af0969a0dd2f6387a6a8465452dd

IfMgr clean-up

* Avoid calling overridable methods in the constructor.
* Initialise fields in the declaration.
* Remove unused parameters.
* Remove null checks after new, new never returns null.
* Remove unnecessary return statements.
* Remove end-of-method null assignments for local variables.
* Use Map methods to simplify processing.
* Fix a couple of invalid null-handling constructs.

Change-Id: I144268785df2b648daa487c1eb8c63877dd13325
Signed-off-by: Stephen Kitt <skitt@redhat.com>