NosImage Profile enhancement README and ImageType field (#5395)

* NosImage Profile enhancement readme creation

* NosImage proto changes

* NosImage Profile enhancement readme creation

* NosImage Profile enhancement readme creation and proto update

* NosImage Profile enhancement readme creation and proto update

---------

Co-authored-by: Darren Loher <dloher@google.com>

Author: kapilrajput-g

proto/nosimage.proto

@@ -27,6 +27,13 @@ import "github.com/openconfig/featureprofiles/proto/ocrpcs.proto";
 import "github.com/openconfig/ondatra/proto/testbed.proto";
 import "google/protobuf/timestamp.proto";
 
+// Defines the release type of the network operating system image.
+enum ImageType {
+  IMAGETYPE_UNSPECIFIED = 0;  // Default value
+  IMAGETYPE_GA = 1;           // General Availability
+  IMAGETYPE_EFT = 2;          // Early Field Trial
+}
+
 // NOSImageProfile - A network operating system and version which provides
 // support for a list of OpenConfig paths and RPCs.
 message NOSImageProfile {
@@ -58,18 +65,21 @@ message NOSImageProfile {
   // OpenConfig RPCs supported by the network operating system.
   openconfig.ocrpcs.OCRPCs ocrpcs = 6;
 
-  // featureprofile_test_result contains a list of tests which 
+  // featureprofile_test_result contains a list of tests which
   // were executed on the NOS software was tested against
   repeated FeatureProfileTestResult featureprofile_test_result = 8;
 
+  // Specifies the type of the image release.
+  ImageType image_type = 9;
 }
 
 message FeatureProfileTestResult {
-  // The unique identifier for a featureprofiles test plan.  This string must match
-  // the Metadata plan_id defined for the referenced test.
+  // The unique identifier for a featureprofiles test plan.  This string must
+  // match the Metadata plan_id defined for the referenced test.
   string plan_id = 1;
-  
-  // The git commit hash for the featureprofiles repository containing the referenced test
+
+  // The git commit hash for the featureprofiles repository containing the
+  // referenced test
   string commit = 2;
 
   // result identifies if the test was executed and its outcome

tools/nosimage/requirements/README.md

@@ -0,0 +1,50 @@
+# NOSImageProfile Enhancement Requirements
+
+The `NOSImageProfile` describes a network operating system's (NOS) properties, including identifying the software, its support of OpenConfig RPCs and paths, as well as an assertion of [featureprofiles](https://github.com/openconfig/featureprofiles/tree/main) test results.
+
+## Enhancement Field Requirements
+
+### 1. Machine-Consumable featureprofiles Test Data
+To enable automated coverage analysis and validation tracking, vendors must provide structured test results within the `featureprofile_test_result` field. This structured reporting replaces manual or unstructured updates, providing a unified view of test outcomes.
+
+*   **Field**: `repeated FeatureProfileTestResult featureprofile_test_result = 8;`
+*   **Attributes**:
+    *   **plan_id**: The unique identifier for the test plan, which must match the metadata defined in the `featureprofiles` repository.
+    *   **commit**: The specific git commit hash of the `featureprofiles` repository used for the execution.
+    *   **result**: The final status of the test (e.g., `PASSED`, `FAILED`, `NOT_EXECUTED`).
+
+### 2. Image Release Type
+The `image_type` field defines the release stage of the network operating system image, allowing automated ingestion pipelines to categorize builds correctly.
+
+* **Field**: `ImageType image_type = 10;`
+* **Supported Values**:
+  * `IMAGETYPE_GA`: General Availability release.
+  * `IMAGETYPE_EFT`: Early Field Trial release.
+
+
+---
+
+## Textproto Example
+
+```textproto
+vendor_id: OPENCONFIG
+nos: "network-os"
+software_version: "24.1.R1"
+hardware_name: "fixed-sku-01"
+
+# Enhancement: Multiple machine-consumable test results
+featureprofile_test_result: {
+  plan_id: "interfaces-base-config"
+  commit: "a1b2c3d4e5f6g7h8i9j0"
+  result: PASSED
+}
+featureprofile_test_result: {
+  plan_id: "bgp-neighbor-state"
+  commit: "a1b2c3d4e5f6g7h8i9j0"
+  result: FAILED
+}
+
+
+
+# Enhancement: Categorized image release type
+image_type: IMAGETYPE_GA