Update puppet-vswitch

Currently we are using all merged patches in OPM RPM anyway,
so we need to update this repo ASAP.

b7a15fc Allow non-word characters in vs_bridge external_ids
0351844 Normalize Gemfile & pin tests to rspec < 2.99
8f4047e Fixed ovs provider
49dbaff Release 0.3.0
Merge pull request #92 from paramite/vswitch-update

Update puppet-vswitch