Update SOL003 HTTP section

src/SOL003/VNFFaultManagement/VNFFaultManagement.yaml

@@ -477,6 +477,21 @@ components:
           explode: false
           schema:
             type: string
+        ETag:
+          description: >
+            Used to provide the current entity-tag for the selected resource representation. It can be sent in
+            "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+        Last-Modified:
+          description: >
+            Used to provide a timestamp indicating the date and time at which the server believes the selected resource
+            representation was last modified. It can be sent in "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+            format: date-time
       content:
         application/json:
           schema:

src/SOL003/VNFIndicator/VNFIndicator.yaml

@@ -583,7 +583,6 @@ components:
         tested the Notification endpoint as described in clause 8.4.7.3.2 and the test has failed.
         In this case, the "detail" attribute in the "ProblemDetails" structure shall convey more information
         about the error.
-
       headers:
         WWW-Authenticate:
           description: |

src/SOL003/VNFLifecycleManagement/VNFLifecycleManagement.yaml

@@ -4068,6 +4068,21 @@ components:
           explode: false
           schema:
             type: string
+        ETag:
+          description: >
+            Used to provide the current entity-tag for the selected resource representation. It can be sent in
+            "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+        Last-Modified:
+          description: >
+            Used to provide a timestamp indicating the date and time at which the server believes the selected resource
+            representation was last modified. It can be sent in "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+            format: date-time
       content:
         application/json:
           schema:

src/SOL003/VNFPerformanceManagement/VNFPerformanceManagement.yaml

@@ -709,6 +709,21 @@ components:
           explode: false
           schema:
             type: string
+        ETag:
+          description: >
+            Used to provide the current entity-tag for the selected resource representation. It can be sent in
+            "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+        Last-Modified:
+          description: >
+            Used to provide a timestamp indicating the date and time at which the server believes the selected resource
+            representation was last modified. It can be sent in "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+            format: date-time
       content:
         application/json:
           schema:
@@ -1050,6 +1065,21 @@ components:
           explode: false
           schema:
             type: string
+        ETag:
+          description: >
+            Used to provide the current entity-tag for the selected resource representation. It can be sent in
+            "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+        Last-Modified:
+          description: >
+            Used to provide a timestamp indicating the date and time at which the server believes the selected resource
+            representation was last modified. It can be sent in "200 OK", "201 Created" and "204 No Content" responses.
+          style: simple
+          schema:
+            type: string
+            format: date-time
       content:
         application/json:
           schema: