Update release docs

- Also synched up the API changes in openapi yml file
- Step 1 and 2 of the release process

Issue-ID: CPS-1662
Change-Id: I5b9485497a27a3dee8639faedfa9c1bd8ed3265e
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>
diff --git a/docs/api/swagger/ncmp/openapi-inventory.yaml b/docs/api/swagger/ncmp/openapi-inventory.yaml
index 3bf93a1..2454de7 100644
--- a/docs/api/swagger/ncmp/openapi-inventory.yaml
+++ b/docs/api/swagger/ncmp/openapi-inventory.yaml
@@ -4,14 +4,14 @@
   description: NCMP Inventory API
   version: "1.0"
 servers:
-  - url: /ncmpInventory
+- url: /ncmpInventory
 security:
-  - basicAuth: []
+- basicAuth: []
 paths:
   /v1/ch:
     post:
       tags:
-        - network-cm-proxy-inventory
+      - network-cm-proxy-inventory
       summary: DMI notifies NCMP of new CM Handles
       description: "Register a DMI Plugin with any new, updated or removed CM Handles."
       operationId: updateDmiPluginRegistration
@@ -65,51 +65,51 @@
                 $ref: '#/components/schemas/DmiPluginRegistrationErrorResponse'
               example:
                 failedCreatedCmHandles:
-                  - cmHandle: my-cm-handle-01
-                    errorCode: "00"
-                    errorText: Unknown error. <error-details>
-                  - cmHandle: my-cm-handle-02
-                    errorCode: "01"
-                    errorText: cm-handle already exists
-                  - cmHandle: my-cm-handle-03
-                    errorCode: "03"
-                    errorText: cm-handle has an invalid character(s) in id
+                - cmHandle: my-cm-handle-01
+                  errorCode: "00"
+                  errorText: Unknown error. <error-details>
+                - cmHandle: my-cm-handle-02
+                  errorCode: "01"
+                  errorText: cm-handle already exists
+                - cmHandle: my-cm-handle-03
+                  errorCode: "03"
+                  errorText: cm-handle has an invalid character(s) in id
                 failedUpdatedCmHandles:
-                  - cmHandle: my-cm-handle-01
-                    errorCode: "00"
-                    errorText: Unknown error. <error-details>
-                  - cmHandle: my-cm-handle-02
-                    errorCode: "02"
-                    errorText: cm-handle does not exist
-                  - cmHandle: my-cm-handle-03
-                    errorCode: "03"
-                    errorText: cm-handle has an invalid character(s) in id
+                - cmHandle: my-cm-handle-01
+                  errorCode: "00"
+                  errorText: Unknown error. <error-details>
+                - cmHandle: my-cm-handle-02
+                  errorCode: "02"
+                  errorText: cm-handle does not exist
+                - cmHandle: my-cm-handle-03
+                  errorCode: "03"
+                  errorText: cm-handle has an invalid character(s) in id
                 failedRemovedCmHandles:
-                  - cmHandle: my-cm-handle-01
-                    errorCode: "00"
-                    errorText: Unknown error. <error-details>
-                  - cmHandle: my-cm-handle-02
-                    errorCode: "02"
-                    errorText: cm-handle does not exists
-                  - cmHandle: my-cm-handle-03
-                    errorCode: "03"
-                    errorText: cm-handle has an invalid character(s) in id
+                - cmHandle: my-cm-handle-01
+                  errorCode: "00"
+                  errorText: Unknown error. <error-details>
+                - cmHandle: my-cm-handle-02
+                  errorCode: "02"
+                  errorText: cm-handle does not exists
+                - cmHandle: my-cm-handle-03
+                  errorCode: "03"
+                  errorText: cm-handle has an invalid character(s) in id
   /v1/ch/cmHandles:
     get:
       tags:
-        - network-cm-proxy-inventory
+      - network-cm-proxy-inventory
       summary: "Get all cm handle IDs for a registered DMI plugin (DMI plugin, DMI\
         \ data plugin, DMI model plugin)"
       description: Get all cm handle IDs for a registered DMI plugin
       operationId: getAllCmHandleIdsForRegisteredDmi
       parameters:
-        - name: dmi-plugin-identifier
-          in: query
-          description: dmi-plugin-identifier
-          required: true
-          schema:
-            type: string
-            example: my-dmi-plugin
+      - name: dmi-plugin-identifier
+        in: query
+        description: dmi-plugin-identifier
+        required: true
+        schema:
+          type: string
+          example: my-dmi-plugin
       responses:
         "200":
           description: OK
@@ -152,7 +152,7 @@
   /v1/ch/searches:
     post:
       tags:
-        - network-cm-proxy-inventory
+      - network-cm-proxy-inventory
       summary: Query for CM Handle IDs
       description: "Query and get CMHandleIds for additional properties, public properties\
         \ and registered DMI plugin (DMI plugin, DMI data plugin, DMI model plugin)."
@@ -230,14 +230,14 @@
         removedCmHandles:
           type: array
           example:
-            - my-cm-handle1
-            - my-cm-handle2
-            - my-cm-handle3
+          - my-cm-handle1
+          - my-cm-handle2
+          - my-cm-handle3
           items:
             type: string
     RestInputCmHandle:
       required:
-        - cmHandle
+      - cmHandle
       type: object
       properties:
         cmHandle:
@@ -327,6 +327,59 @@
         moduleName:
           type: string
           example: my-module
+  responses:
+    NoContent:
+      description: No Content
+      content: {}
+    BadRequest:
+      description: Bad Request
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorMessage'
+          example:
+            status: 400 BAD_REQUEST
+            message: Bad request error message
+            details: Bad request error details
+    Unauthorized:
+      description: Unauthorized
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorMessage'
+          example:
+            status: 401
+            message: Unauthorized error message
+            details: Unauthorized error details
+    Forbidden:
+      description: Forbidden
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorMessage'
+          example:
+            status: 403
+            message: Forbidden error message
+            details: Forbidden error details
+    InternalServerError:
+      description: Internal Server Error
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorMessage'
+          example:
+            status: 500
+            message: Internal Server Error
+            details: Internal Server Error occurred
+  parameters:
+    dmiPluginIdentifierInQuery:
+      name: dmi-plugin-identifier
+      in: query
+      description: dmi-plugin-identifier
+      required: true
+      schema:
+        type: string
+        example: my-dmi-plugin
   securitySchemes:
     basicAuth:
       type: http