Added creation of AML configuration file to testing pipeline

.ci/azure-pipelines.yml

@@ -1,4 +1,4 @@
-# This file is almost similar to azure-pipelines-gpu.yml file, key difference is 
+# This file is almost similar to azure-pipelines-gpu.yml file, key difference is
 # we are running our builds only on Linux machine.  
 # Pull request against these pipelines will trigger this build
 pr:
@@ -29,7 +29,11 @@ steps:
   displayName: 'Build Configuration'
 
 - script: |
-   sed -i 's#"subscription_id": "<>"#"subscription_id": "$(subscriptionid)"#g' .aml_config/config.json
+    mkdir aml_config
+    echo -e "{\n    \"subscription_id\":\""$subscription_id"\",
+    \"resource_group\":\""$resource_group"\",
+    \"workspace_name\":\""$workspace_name"\",
+    \"location\":\""$location"\"\n}" > aml_config/config.json
 
 - bash: |
     cd image_classification