Add template for vdu-autoheal in sample dir.

vdu-autoheal template is missing in sample dir. Adding it here
for user references.
Change-Id: I78a941e2ad1a8ce378dbb8aa36e98f1462ab602b

samples/tosca-templates/vnfd/tosca-vnfd-monitoring-vdu-autoheal.yaml

@@ -0,0 +1,55 @@
+tosca_definitions_version: tosca_simple_profile_for_nfv_1_0_0
+description: Demo example
+
+metadata:
+ template_name: sample-tosca-vnfd
+
+topology_template:
+  node_templates:
+    VDU1:
+      type: tosca.nodes.nfv.VDU.Tacker
+      capabilities:
+        nfv_compute:
+          properties:
+            disk_size: 1 GB
+            mem_size: 512 MB
+            num_cpus: 1
+      properties:
+        image: cirros-0.4.0-x86_64-disk
+        mgmt_driver: noop
+        availability_zone: nova
+        mgmt_driver: noop
+        monitoring_policy:
+          name: ping
+          parameters:
+            monitoring_delay: 45
+            count: 3
+            interval: 1
+            timeout: 2
+          actions:
+            failure: vdu_autoheal
+        user_data_format: RAW
+        user_data: |
+          #!/bin/sh
+          echo "my hostname is `hostname`" > /tmp/hostname
+          df -h > /home/cirros/diskinfo
+          sleep 90
+          sudo ifdown eth0
+
+    CP1:
+      type: tosca.nodes.nfv.CP.Tacker
+      properties:
+        management: true
+        anti_spoofing_protection: false
+      requirements:
+        - virtualLink:
+            node: VL1
+        - virtualBinding:
+            node: VDU1
+
+    VL1:
+      type: tosca.nodes.nfv.VL
+      properties:
+        network_name: net_mgmt
+        vendor: Tacker
+