Add serialization for Tosca Model

Added tests for Yaml policy monitoring
Added provider interface calls in provider and structure for handling legacy APIs.

Issue-ID: POLICY-1195
Change-Id: I4825272e0713b9e6a4b89753828de8905bcffbd1
Signed-off-by: liamfallon <liam.fallon@est.tech>
diff --git a/models-tosca/src/test/resources/policies/vDNS.policy.guard.minmax.output.json b/models-tosca/src/test/resources/policies/vDNS.policy.guard.minmax.output.json
new file mode 100644
index 0000000..83d2f27
--- /dev/null
+++ b/models-tosca/src/test/resources/policies/vDNS.policy.guard.minmax.output.json
@@ -0,0 +1,10 @@
+{
+    "guard.minmax.scaleout": {
+        "type": "onap.policies.controlloop.guard.MinMax",
+        "version": "1.0.0",
+        "metadata": {
+            "policy-id": "guard.minmax.scaleout",
+            "policy-version": 1
+        }
+    }
+}
\ No newline at end of file