The module was vendored for Pike because the ansible 2.3 module had
a bug which broke idempotency and would constantly attach/deattach
the router each playbook run, breaking the network.
Since OSA is updated to queens, the vendored module is no longer
needed as ansible 2.4 ships with the fixed module.
Change-Id: I8594dda75900af43842a044de2055e22ef0d8283