* `ClientWebSocketContainer`: add some synchronization to avoid race conditions: https://build.spring.io/browse/INT-B41-492
* `TomcatWebSocketTestServer`: convert to `0` port to rely on the OS resolution for `localPort`
* Add `LogAdjustingTestSupport` for STOMP test
* `SftpServerTests`: use `0` port to rely on the OS resolution for `localPort`
* `ImapMailReceiver`, `OutboundGatewayFunctionTests` (JMS), `CachingClientConnectionFactoryTests`,
`AsyncGatewayTests`, `AsyncMessagingTemplateTests`, `GatewayParserTests`, `PriorityChannelTests`, `AggregatorIntegrationTests`: increase timeout
* `EnableIntegrationTests`: use `LogAdjustingTestSupport`
* `FileOutboundChannelAdapterParserTests`: rework `Thread.sleep()` with `CountDownLatch`
* `ConnectionToConnectionTests`: increase timeout and count iteration. Previously with `1sec` we may lose some events. And we can't just rely on the `10sec`,
because the last iteration will be so long
* `TcpOutboundGatewayTests`: `500ms` is so big timeout to wait for the `Exception` that in the high load environment we can yield to other Thread so long.
Like in our case to `server` Thread to send the reply for us. Therefore decrease the Exception timeout to the `50ms` and increase server delay to `2sec`
* `StompInboundChannelAdapterWebSocketIntegrationTests`: remove `@Qualifier("taskScheduler")` as a potential candidate to test against latest SF changes.
We're fine with `SF-4.2.2` and it is just a test-case. So, I don't see reason to wait for their fix here.
STOMP: `session = null` in adapters for any transportError
Polishing
9d8e2b61f6