span: add feature (rx only) (VPP-185)

Change-Id: I0f7cbf06b5a5acd745d13c9f5c761ea18132107b
Signed-off-by: marek <mazavods@gmail.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 5721b6b..2148e94 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -401,3 +401,13 @@
              dst_address
              )
         )
+
+    def sw_interface_span_enable_disable(self, sw_if_index_from, sw_if_index_to, enable=1):
+        """
+
+        :param sw_if_index_from:
+        :param sw_if_index_to:
+        :param enable
+
+        """
+        return self.api(vpp_papi.sw_interface_span_enable_disable, (sw_if_index_from, sw_if_index_to, enable ))