Enhance Nic.master for ovs virtual switches [2/2]

Add a test to check whether an interface is part of a ovs virtual switch.
This is to stop the network barclamp from reconfiguring such interfaces,
similar to what is already does for linux-bridge and bond slaves.



 chef/cookbooks/network/recipes/default.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Crowbar-Pull-ID: fe6235d7a36ecb5fb03d7dc3628236c4743f2296

Crowbar-Release: pebbles