Adding in export function to checkk all test env variables

.pipelines/e2e-step-template.yaml

@@ -89,6 +89,7 @@ steps:
       export REGIONS=$(AKS_ENGINE_REGION) 
       export IS_JENKINS=false 
       export DEBUG_CRASHING_PODS=true
+      export
       make test-kubernetes
     name: DeployAKSEngine
     displayName: Run AKS-Engine E2E Tests