tests: Decoupling imagestream and buildconfig for SGX for automation

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@intel.com>

Author: chaitanya1731

tests/l2/sgx/README.md

@@ -1,12 +1,13 @@
 ### Verify Intel® Software Guard Extensions (Intel® SGX) Provisioning
 This [SampleEnclave](https://github.com/intel/linux-sgx/tree/master/SampleCode/SampleEnclave) application workload from the Intel SGX SDK runs an Intel SGX enclave utilizing the EPC resource from the Intel SGX provisioning.
+
 * Build the container image. 
 ```
+$ oc apply -f https://raw.githubusercontent.com/intel/intel-technology-enabling-for-openshift/main/tests/l2/sgx/sgx_imagestream.yaml
 $ oc apply -f https://raw.githubusercontent.com/intel/intel-technology-enabling-for-openshift/main/tests/l2/sgx/sgx_build.yaml
 ```
 
 * Deploy and run the workload.
-  
 ```
 $ oc apply -f https://raw.githubusercontent.com/intel/intel-technology-enabling-for-openshift/main/tests/l2/sgx/sgx_job.yaml
 ```

tests/l2/sgx/sgx_build.yaml

@@ -1,13 +1,6 @@
 # Copyright (c) 2023 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
 
-apiVersion: image.openshift.io/v1
-kind: ImageStream
-metadata:
-  name: intel-sgx-workload
-  namespace: intel-sgx
-spec: {}
----
 apiVersion: build.openshift.io/v1
 kind: BuildConfig
 metadata:

tests/l2/sgx/sgx_imagestream.yaml

@@ -0,0 +1,8 @@
+# Copyright (c) 2025 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: image.openshift.io/v1
+kind: ImageStream
+metadata:
+  name: intel-sgx-workload
+  namespace: intel-sgx