Refactor OpenAPI Policy Executor

- replace payload with request(s)
- replace payloadType with schema (one schema for each operation)
- include conflict error response in OpenAPI
- introduce 4 schemas in NCMP (doc module) for create, update, patch & delete
- udpate stub & test to follow new API and use one schema for testign purposes

Issue-ID: CPS-2335
Change-Id: Ifc40062ae83429a9ffba350ec3bcc28cb7147293
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>
diff --git a/docs/schemas/policy-executor/ncmp-update-schema-1.0.0.json b/docs/schemas/policy-executor/ncmp-update-schema-1.0.0.json
new file mode 100644
index 0000000..0a497e3
--- /dev/null
+++ b/docs/schemas/policy-executor/ncmp-update-schema-1.0.0.json
@@ -0,0 +1,29 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "$id": "urn:cps:org.onap.cps.ncmp.policy-executor:ncmp-update-schema:1.0.0",
+  "$ref": "#/definitions/NcmpUpdate",
+  "definitions": {
+    "NcmpUpdate": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "cmHandleId": {
+          "type": "string"
+        },
+        "resourceIdentifier": {
+          "type": "string"
+        },
+        "targetIdentifier": {
+          "type": "string"
+        },
+        "cmChangeRequest": {
+          "type": "object"
+        }
+      },
+      "required": [
+        "targetIdentifier",
+        "cmChangeRequest"
+      ]
+    }
+  }
+}