vs_port: Avoid detecting partial name

This ensures that a different port, which includes name of the port
being created, is ignored when checking whether the target already
exists.

Closes-Bug: #2043921
Change-Id: I4a8db4e7b0da87a00ef097c8e066a11bfc5fde90

lib/puppet/provider/vs_port/ovs.rb

@@ -13,7 +13,7 @@ Puppet::Type.type(:vs_port).provide(:ovs) do
   commands :vsctl => 'ovs-vsctl'
 
   def exists?
-    vsctl('list-ports', @resource[:bridge]).include? @resource[:port]
+    vsctl('list-ports', @resource[:bridge]).split("\n").include? @resource[:port]
   rescue Puppet::ExecutionFailure => e
     return false
   end