Restart OVS after we install the packages, just to be sure

Change-Id: I351a7c8500bbbc1494217d7ec311bd141e8b43c5
Merge branch 'build_ovs_source' of github.com:kevinbringard/cookbook-openstack-network into build_ovs_source

Conflicts:
	recipes/openvswitch.rb

Change-Id: Icbe370e60e5a78c45b1647fc16568b92e832b944