Merge pull request #1890 from murgatroid99/grpc-js-xds_fault_injection_default

grpc-js-xds: Enable fault injection feature by default

Author: murgatroid99

packages/grpc-js-xds/scripts/xds.sh

@@ -51,7 +51,6 @@ grpc/tools/run_tests/helper_scripts/prep_xds.sh
 GRPC_NODE_TRACE=xds_client,xds_resolver,cds_balancer,eds_balancer,priority,weighted_target,round_robin,resolving_load_balancer,subchannel,keepalive,dns_resolver,fault_injection,http_filter \
   GRPC_NODE_VERBOSITY=DEBUG \
   NODE_XDS_INTEROP_VERBOSITY=1 \
-  GRPC_XDS_EXPERIMENTAL_FAULT_INJECTION=1 \
   python3 grpc/tools/run_tests/run_xds_tests.py \
     --test_case="all,timeout,circuit_breaking,fault_injection" \
     --project_id=grpc-testing \

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

@@ -15,4 +15,4 @@
  *
  */
 
-export const EXPERIMENTAL_FAULT_INJECTION = process.env.GRPC_XDS_EXPERIMENTAL_FAULT_INJECTION;
+export const EXPERIMENTAL_FAULT_INJECTION = (process.env.GRPC_XDS_EXPERIMENTAL_FAULT_INJECTION ?? 'true') === 'true';