Teleport occasionally missing end of session recordings

[russjones]

The following integration test intermittently fails which indicates that the end of a session is occasionally not recorded. This test fails very infrequently on Jenkins and our local developer workstations, but fails with some regularity on our macOS cloud box.

Xcloud@/tmp/teleport-tests/src/github.com/gravitational/teleport/integration$ GOPATH=/tmp/teleport-tests go test -v ./... -check.f=TestAuditOn
=== RUN   TestIntegrations
[AUTH]  Auth service is starting on localhost:20198
[Node] Successfully registered with the cluster
[Proxy] Successfully registered with the cluster
Starting reverse tunnel service is starting on localhost:20195 using no cache policy
[Node] Successfully registered with the cluster
[PROXY] SSH proxy service is starting on localhost:20197
[SSH]   Service is starting on localhost:20199 using no cache policy
[SSH]   Service is starting on localhost:20194 using cache policy with 20h0m0s TTL
the connection was closed on the remote side on  31 Jan 18 10:51 PST
[AUTH]  Auth service is starting on localhost:20192
[Node] Successfully registered with the cluster
[Proxy] Successfully registered with the cluster
Starting reverse tunnel service is starting on localhost:20189 using no cache policy
[PROXY] SSH proxy service is starting on localhost:20191
[SSH]   Service is starting on localhost:20193 using no cache policy
[Node] Successfully registered with the cluster
[SSH]   Service is starting on localhost:20188 using cache policy with 20h0m0s TTL
the connection was closed on the remote side on  31 Jan 18 10:51 PST

----------------------------------------------------------------------
FAIL: integration_test.go:161: IntSuite.TestAuditOn

integration_test.go:302:
    // session stream keeps coming back short
    c.Fatal("stream is not getting data: %q", string(sessionStream))
Xcloud@~$ echo hi
hi
Xcloud@~$ 

OOPS: 0 passed, 1 FAILED
--- FAIL: TestIntegrations (13.32s)
FAIL
exit status 1
FAIL	github.com/gravitational/teleport/integration	13.475s