Add xds interop test script to Linux tests

packages/grpc-js/src/xds-client.ts

@@ -877,8 +877,6 @@ export class XdsClient {
     ];
     for (const typeUrl of allTypeUrls) {
       const state = this.adsState[typeUrl];
-      state.nonce = '';
-      state.versionInfo = '';
       if (state.getResourceNames().length > 0) {
         this.updateNames(typeUrl);
       }

run-tests.sh

@@ -75,6 +75,12 @@ do
   npm test || FAILED="true"
 done
 
+if [ "$OS" = "Linux" ]
+then
+  # Run the xds interop tests only on Linux
+  ./packages/grpc-js/scripts/xds.sh
+fi
+
 set +ex
 nvm use 8
 set -ex