Switch calico projects to use libcalico from downstream

* calico-containers should use libcalico repo from downstream branch
  mcp

* libcalico code should be already checkouted to the related path
  in calico-containers repo:

   ${CALICO_CONTAINERS_ROOT}/calico_node/node_share/libcalico

   was already done in I06fab53da73a2694483b806d26bd55594f809307

Change-Id: I507d92abf6f96f7ef6e57d98ca9c8446ddc4ec37
diff --git a/vars/buildCalicoContainers.groovy b/vars/buildCalicoContainers.groovy
index 5cf959f..e0cf68b 100644
--- a/vars/buildCalicoContainers.groovy
+++ b/vars/buildCalicoContainers.groovy
@@ -52,11 +52,15 @@
     """
   }
 
-
+  // libcalico project should be already checkouted to
+  // calico_node/node_share/libcalico
   stage('Build calico/node'){
     sh """
       make node_image \
         NODE_CONTAINER_NAME=${nodeContainerName} \
+        NODE_CONTAINER_BUILD_ARGS='\
+          --build-arg LIBCALICO_REPO=file:///tmp/node_share/libcalico \
+          --build-arg LIBCALICO_VER=mcp' \
         BUILD_CONTAINER_NAME=${buildImage} \
         FELIX_CONTAINER_NAME=${felixImage} \
         CONFD_URL=${confdUrl} \