Add the #list_servers method.

lib/fog/compute/requests/hp/list_servers.rb

@@ -0,0 +1,41 @@
+module Fog
+  module HP
+    class Compute
+      class Real
+
+        # List all servers (IDs and names only)
+        #
+        # ==== Returns
+        # * response<~Excon::Response>:
+        #   * body<~Hash>:
+        #   * 'servers'<~Array>:
+        #     * 'id'<~Integer> - Id of server
+        #     * 'name<~String> - Name of server
+        def list_servers
+          request(
+            :expects  => [200, 203],
+            :method   => 'GET',
+            :path     => 'servers.json'
+          )
+        end
+
+      end
+
+      class Mock
+
+        def list_servers
+          response = Excon::Response.new
+          data = list_servers_detail.body['servers']
+          servers = []
+          for server in data
+            servers << server.reject { |key, value| !['id', 'name'].include?(key) }
+          end
+          response.status = [200, 203][rand(1)]
+          response.body = { 'servers' => servers }
+          response
+        end
+
+      end
+    end
+  end
+end