integration: regression test for issue 10589

This issue was caused by a race between init exits and new exec process
tracking inside the shim. The test operates by controlling the time
between when the shim invokes "runc exec" and when the actual "runc
exec" is triggered. This allows validating that races for shim state
tracking between pre- and post-start of the exec process do not exist.

Relates to https://github.com/containerd/containerd/issues/10589

Signed-off-by: Samuel Karp <samuelkarp@google.com>

integration/failpoint/const.go

@@ -0,0 +1,22 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package failpoint
+
+const (
+	DelayExecReadyEnv = "_RUNC_FP_DELAY_EXEC_READY"
+	DelayExecDelayEnv = "_RUNC_FP_DELAY_EXEC_DELAY"
+)