re-enable tests

bazel/experiments.bzl

@@ -28,6 +28,9 @@ EXPERIMENTS = {
             "promise_based_client_call",
             "promise_based_server_call",
         ],
+        "cpp_end2end_test": [
+            "promise_based_server_call",
+        ],
         "endpoint_test": [
             "tcp_frame_size_tuning",
             "tcp_rcv_lowat",
@@ -51,6 +54,9 @@ EXPERIMENTS = {
             "memory_pressure_controller",
             "unconstrained_max_quota_buffer_size",
         ],
+        "xds_end2end_test": [
+            "promise_based_server_call",
+        ],
     },
     "on": {
         "flow_control_test": [

src/core/lib/experiments/experiments.yaml

@@ -115,8 +115,7 @@
   default: false
   expiry: 2023/06/01
   owner: ctiller@google.com
-  test_tags: ["core_end2end_test"]
+  test_tags: ["core_end2end_test", "cpp_end2end_test", "xds_end2end_test"]
-  disabled_test_tags: ["cpp_end2end_test", "xds_end2end_test"]
 - name: transport_supplies_client_latency
   description: If set, use the transport represented value for client latency in opencensus
   default: false